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Signs and Symptoms in Psychiatry

Signs And Symptoms In Psychiatry

by justine135135, Nov. 2014

Subjects: definitions psychiatry signs symptoms

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	Abreaction	A process by which repressed material, particularly a painful experience or a conflict, is brought back to consciousness; in this process, the person not only recalls but also relives the repressed material, which is accompanied by the appropriate affective response.
	Abstract thinking	Thinking characterized by the ability to grasp the essentials of a whole, to break a whole into its parts, and to discern common properties. To think symbolically.
	Abulia	Reduced impulse to act, think and speak associated with indifference about consequences of action. Occurs as a result of neurological deficit, depression, and schizophrenia.
	Acalculia	Loss of ability to do calculations; not caused by anxiety or impairment in concentration. Occurs with neurological deficit and learning disorder.
	Acataphasia	Disordered speech in which statements are incorrectly formulated. Patients may express themselves with words that sound like the ones intended but are not appropriate to the thoughts, or they may use totally inappropriate expressions.
	Acathexis	Lack of feeling associated with an ordinarily emotionally charged subject; in psychoanalysis, it denotes the patient's detaching or transferring of emtion from thoughts and ideas. Also called decathexis. Occurs in anxiety, dissociative, schizophrenic, and bipolar disorders.
	Acenesthesia	Loss of sensation of physical existence.
	Acrophobia	Dread of high places.
	Acting out	Behavioral response to an unconscious drive or impulse that brings about temporary partial relief of inner tension; relief is attained by reacting to a present situation as if it were the situation that originally gave rise to the drive or impulse. Common in borderline states.
	Aculalia	Nonsense speech associated with marked impairment of comprehension. Occurs in mania, schizophrenia, and neurological deficit.
	Adiadochokinesia	Inability to perform rapid alternating movements. Occurs with neurological deficit and cerebellar lesions.
	Adynamia	Weakness and fatigability, characteristic of neurasthenia and depression.
	Aerophagia	Excessive swallowing of air. Seen in anxiety disorder.
	Affect	The subjective and immediate experience of emotion attached to ideas or mental representations of objects. Affect has outward manifestations that may be classified as restricted, blunted, flattened, broad, labile, appropriate, or inappropriate.
	Ageusia	Lack or impairment of the sense of taste. Seen in depression and neurological deficit.
	Aggression	Forceful, goal-directed action that may be verbal or physical; the motor counterpart of the affect of rage, anger, or hostility. Seen in neurological deficit, temporal lobe disorder, impulse-control disorders, mania, and schizophrenia.
	Agitation	Severe anxiety associated with motor restlessness.
	Agnosia	Inability to understand the import or significance of sensory stimuli; cannot be explained by a defect in sensory pathways or cerebral lesion; the term has also been used to refer to the selective loss or disuse of knowledge of specific objects because of emotional circumstances, as seen in certain schizophrenic, anxious, and depressed patients. Occurs with neurological deficit.
	Agoraphobia	Morbid fear of open places or leaving the familiar setting of the home. May be present with or witout panic attacks.
	Agraphia	Loss or impairment of a previously possessed ability to write.
	Ailurophobia	Dread of cats.
	Akasthisia	Subjective feeling of motor restlessness manifested by a compelling need to be in constant movement; may be seen as an extrapyramidal adverse effect of antipsychotic medication. May be mistaken for psychotic agitation.
	Akinesia	Lack of physical movement, as in the extreme immobility of catatonic schizophrenia; may also occur as an extrapyramidal effect of antipsychotic medication.
	Akinetic mutism	Absence of voluntary motor movement or speech in a patient who is apparently alert (as evidenced by eye movements). Seen in psychotic depression and catatonic states.
	Alexia	Loss of previously possessed reading facility; not explained by defective visual acuity.
	Alexithymia	Inability or difficulty in describing or being aware of one's emotions or moods; elaboration of fantasies associated with depression, substance abuse, and posttraumatic stress disorder.
	Algophobia	Dread of pain.
	Alogia	Inability to speak because of a mental deficiency or an episode of dementia.
	Ambivalence	Coexistence of two opposing impulses toward the same thing in the same person at the same time. Seen in schizophrenia, borderline states, and obsessive-compulsive disorders.
	Amimia	Lack of ability to make gestures or to comprehend those made by others.
	Amnesia	Partial or total inability to recall past experiences; may be organic (amnestic disorder) or emotional (dissociative amnesia) in origin.
	Amnestic aphasia	Disturbed capacity to name objects, even thought they are known to the patient. Also called anomic aphasia.
	Anaclitic	Depending on others, especially as the infant on the mother; anaclitic depresion in children results from an absense of mothering.
	Analgesia	State in which one feels little or no pain. Can occur under hypnosis and in dissociative disorder.
	Anacasm	Repetitious or stereotyped behavior or thought usually used as a tension-relieving device; used as a synonym for obsession and seen in obsessive-compulsive (anankastic) personaltiy.
	Androgyny	Combination of culturally determined female and male characteristics in one person.
	Anergia	Lack of energy.
	Anhedonia	Loss of interest in and withdrawal from all regular and pleasurable activities. Often associated with depression.
	Anomia	Inabiliity to recall the names of objects.
	Anorexia	Loss or decrease in appetite. In anorexia nervosa, appetite may be preserved, but the patient refuses to eat.
	Anosognosia	Inability to recognize a physical deficit in oneself (e.g. patient denies paralyzed limb).
	Anterograde Amnesia	Loss of memory for events subsequent to the onset of the amnesia; common after trauma.
	Anxiety	Feeling of apprehension caused by anticipation of danger, which may be internal or external.
	Apathy	Dulled emotional tone associated with detachment or indifference, often with poor motivation; observed in certain types of schizophrenia and depression.
	Aphasia	Any disturbance in the comprehension or expression of language caused by a brain lesion.
	Aphonia	Loss of voice. Seen in conversion disorder.
	Apperception	Awareness of the meaning and significance of a particular sensory stimulus as modified by one's experiences, knowledge, thoughts, and emotions.
	Appropriate affect	Emotional tone in harmony with the accompanying idea, thought, or speech.
	Apraxia	Inability to perform a voluntary purposeful motor activity; cannot be explained by paralysis or other motor or sensory impairment. In constructional apraxia, a patient cannot draw two or three-dimensional forms.
	Astasia abasia	Inability to stand or to walk in a normal manner, even though normal leg movements can be perfored in a sitting or lying down position. Seen in conversion disorder.
	Astereognosis	Inability to identify familiar objects by touch. Seen with neurological deficit.
	Asthenopia	Pain or discomfort of the eyes, for example, pressure, grittiness.
	Asyndesis	Disorder of language in which the patient combines unconnected ideas and images. Commonly seen in schizophrenia.
	Ataxia	Lack of coordination, physical or mental. (1) In neurology, refers to loss of muscular coordination. (2) In psychiatry, the term intrapyschic ataxia refiers to lack of coordination between feelings and thoughts; seen in schizophrenia and in severe OCD.
	Atonia	Lack of muscle tone.
	Attention	Concentration; the aspect of consciousness that relates to the amount of effort exerted in focusing on certain aspects of an experience, activity, or task. Usually impaired in anxiety and depressive disorders.
	Auditory hallucination	False perception of sound, usually voices, but also other noises, such as music. Most common hallucination in psychiatric disorders.
	Aura	(1) Warning sensations, such as automatisms, fullness in the stomach, blushing, and changes in respiration; cognitive sensations; and mood states usually experienced before a seizure. (2) A sensory prodrome that preceeds a classic migraine headache.
	Autistic thinking	Thinking in which the thoughts are largely narcissistic and egocentric, with emphasis on subjectivity rather than objectivity, and without regard for reality; used interchangeably with autism and dereism. Seen in schizophrenia and autistic disorder.
	Automatism	A state following a seizure in which the person performs movements or actions without being aware of what is happening.
	Behavior	Sum total of the psyche that includes impulses, motivations, wishes, drives, instincts, and cravings, as expressed by a peson's behavior or motor activity. Also called conation.
	Bereavement	Feeling of grief or desolation, especially at the death or loss of a loved one.
	Bizarre delusion	False belief that is patently absurd or fantastic (e.g., invaders from space have implated electrodes in a person's brain). Common in schizophrnia. In nonbizarre delusion, content is usually within the range of possibility.
	Blackout	Amnesia experienced by alcoholics about behavior during drinking bouts; usually indicates reversible brain damage.
	Blocking	Abrupt interuption in train of thinking before a thought or idea is finished; after a brief pause, the person indicates no recall of what was being said or was going to be said (also known as thought deprivation or increased thought latency). Common in shcizophrenia and severe anxiety.
	Blunted affect	Disturbance of affect manifested by a severe reduction in the intensity of externalized feeling tone; one of the fundamental symptoms of schizophrenia, as outlined by Eugen Bleuler.
	Bradykinesia	Slowness of motor activity, with a decrease in normal spontaneous movement.
	Bradylalia	Abnormally slow speech. Common in depression.
	Bradylexia	Inability to read at normal speed.
	Bruxism	Grinding or gnashing of the teeth, typically occuring during sleep. Seen in anxiety disorder.
	Carebaria	Sensation of discomfort or pressure in the head.
	Catalepsy	Condition in which persons maintain the body position into which they are placed; observed in severe cases of catatonic schizophrenia. Also called waxy flexibility and cerea flexibilitas.
	Cataplexy	Temporary sudden loss of muscle tone, causing weakness and immobilization; can be precipitated by a variety of emotional states and is often followed by sleep. Commonly seen in narcolepsy.
	Catatonic excitement	Excited, uncontrolled motor activity seen in catatonic schizophrenia. Patients in a catatonic state may suddenly erupt into an excited state and may be violent.
	Catatonic posturing	Voluntary assumption of an inappropriate or bizarre posture, generally maintained for long periods of time. May switch unexpectedly with catatonic excitement.
	Catatonic rigidity	Fixed and sustained motoric position that is resistant to change
	Catatonic stupor	Stupor in which patients ordinarily are well aware of the their surroundings.
	Cathexis	In psychoanalysis, a conscious or unconscious investment of psychic energy in an idea, concept, object, or person.
	Causalgia	Burning pain that may be organic or psychic in origin.
	Cenesthesia and cenesthetic hallucination	Change in the normal quality of feeling tone in a part/organ of the body. E.g. burning feeling in brain, cutting feeling in bone-marrow, pushing feeling in blood vessels
	Cephalagia	Headache.
	Cerea flexibilitas	Condition of a person who can be molded into a position that is then maintained; when an examiner moves the person's limb, the limb feels as if it were made of wax. Also called catalepsy or waxy flexibility. Seen in schizophrenia.
	Chorea	Movement disorder characterized by random and involuntary quick, jerky, purposeless movements. Seen in Huntington's disease.
	Circumstantiality	Disturbance in the associative thought and speech processes in which a patient digresses into unnecessary details and inappropriate thoughts before communicating the central idea. Observed in schizophrenia, obsessional disturbances, and certain cases of dementia.
	Clang association	Association or speech directed by the sound of a word rather than by its meaning; words have no logical connection; punning and rhyming may dominate the verbal behavior. Seen most frequently in schizophrenia or mania.
	Claustrophobia	Abnormal fear of closed or confining spaces.
	Clonic convulsion	An involuntary, violent muscular contraction or spasm in which the muscles alternately contract and relax. Characteristic phase in grand mal epileptic seizure.
	Clouding of consciousness	Any disturbance of consciousness in which the person is not fully awake, alert, and oriented. Occurs in delirium, dementia, and cognitive disorder.
	Cluttering	Disturbance of fluency involving an abnormally rapid rate and erratic rhythm of speech that impedes intelligibility; the affected individual is usually aware of communicative impairment.
	Cognition	Mental process of knowing and becoming aware; function is closely associated with judgment.
	Coma	State of profound unconsciousness from which a person cannot be roused, with minimal or no detectable responsiveness to stimuli; seen in injury or disease of the brain, in systemic conditions such as diabetic ketoacidosis and uremia, and in intoxications with alcohol and other drugs. Coma may also occur in severe catatonic states and in conversion disorder.
	Coma vigil	Coma in which apatient appears to be asleep but can be aroused (also know as akinetic mutism).
	Command automatism	Condition associated with catalepsy in which suggestions are followed automatically.
	Command hallucination	False perception of orders that a person may feel obliged to obey or unable to resist.
	Complex	A feeling-toned idea.
	Complex partial seizure	A seizure characterized by alterations in consciousness that may be accompanied by complex hallucinations (sometimes olfactory) or illusions. During the seizure, a state of impaired consciousness resembling a dream-like state may occur, and the patient may exhibit repetivie, automatic, or semipurposeful behavior.
	Compulsion	Pathological need to act on an impulse that, if resisted, produces anxiety; repetitive behavior in response to an obsession or performed according to certain rules, with no true end in itself other than to prevent something from occuring in the future.
	Conation	That part of a person's mental life concerned with cravings, strivings, motivations, drives, and wishes as expressed through behavior or motor activity.
	Concrete thinking	Thinking characterized by actual things, events, and immediate experience rather than by abstractions; seen in young children, in those who have lost or never developed the ability to generalize (as in certain cognitive mental disorders), and in schizophrenic persons.
	Condensation	Mental process in whch one symbol stands for a number of components.
	Confabulation	Unconscious filling of gaps in memory by imagining experiences or events that have no basis in fact, commonly seen in amnestic syndromes; should be differentiated from lying.
	Confusion	Disturbances of consciousness manifested by a disordered orientation in relation to time, place, or person.
	Consciousness	State of awareness, with response to external stimuli.
	Constipation	Inability to defecate or difficulty in defecating.
	Constricted affect	Reduction in intensity or feeling tone that is less severe than that of blunted affect.
	Constructional apraxia	Inability to copy a drawing, such as a cube, clock or pentagon, as a result of a brain lesion.
	Conversion phenomena	The development of symbolic physical symptoms and distortions involving the voluntary muscles or special sense organs, not under voluntary control and not explained by any physical disorder. Most common in conversion disorder, but also seen in a variety of mental disorders.
	Convulsion	An involuntary, violent muscular contraction or spasm.
	Coprolalia	Involuntary use of vulgar or obscene language. Observed in some cases of schizophrenia and in Tourette's syndrome.
	Coprophagia	Eating of filth or feces.
	Cryptographia	A private written language.
	Cryptolalia	A private spoken language.
	Cycloplegia	Paralysis of the muscles of acommodation in the eye; observed, at times, as an autonomic adverse effect (anticholinergic effect) of antipsychotic or antidepressant medication.
	Decompensation	Deterioration of psychic functioning caused by a breakdown of defense mechanisms. Seen in psychotic states.
	Deja entendu	Illusion that what on is hearing one has heard previously.
	Deja pense	Condition in which a thought never entertained before is incorrectly regarded as a repetition of a previous thought.
	Deja vu	Illusion of visual recognition in which a new situation is incorrectly regarded as a repetition of a previous experience.
	Delirium	Acute reversable mental disorder characterized by confusion and some impairment of consciousness; generally associated with emotional lability, hallucinations or illusions, and inappropriate, impulsive, irrational, or violent behavior.
	Delirium tremens	Acute and sometimes fatal reaction to withdrawal from alcohol, usually occuring 72 to 96 hours after the cessation of heavy drinking; distinctive characteristics are marked autonomic hyperactivity (tachycardia, fever, hyperhidrosis, and dilated pupils), usually accompanied by tremulousness, hallucinations, illusions, and delusions. Called alcohol withdrawal delirium in DSM-IV-TR
	Delusion	False belief, based on incorrect inference about external reality, that is firmly held despite objective and obvious contradictory proof or evidence and despite the fact that other members of the culture do not share the belief.
	Delusion of control	False belief that a person's will, thoughts, or feelings are being controlled by external forces.
	Delusion of grandeur	Exaggerated conception of one's importance, power, or identity.
	Delusion of infidelity	False belief that one's lover is unfaithful. Sometimes called patholgical jealousy.
	Delusion of persecution	False belief of being harrassed or persecuted; often found in litigious patients who have a pathological tendency to take legal action because of imagined mistreatment. Most common delusion.
	Delusion of poverty	False belief that one is bereft or will be deprived of all material possessions.
	Delusion of reference	False belief that the behavior of others refers to oneself or that events, objects, or other people have a particular and unusual significance, usually of a negative nature; derived from idea of reference, in which persons falsely feel that others are talking about them (e.g. belief that people on television or radio are talking to or about the person.)
	Delusion of self-accusation	False feeling of remorse and guilt. Seen in depression with psychotic features.
	Dementia	Mental disorder characterized by general impairment in intellectual functioning without clouding of consciousness; characterized by failing memory, difficulty with calculations, distractibility, alterations in mood and affect, impaired judgment and abstraction, reduced facility with language, and disturbance of orientation. Although irreversible when it is due to underlying progressive degenerative brain disease, demetia may be reversibel if the cause can be treated.
	Denial	Defense mechanism in which the existance of unpleasant realities is disavowed; refers to keeping out of conscious awareness and aspects of external reality that, if acknowledged, would produce anxiety.
	Depersonalization	Sensation of unreality concerning oneself, parts of oneself, or one's environement that occurs under extreme stress or fatigue. Seen in shcizophrenia, depersonalization disorder, and schizotypal personality disorder.
	Depression	Mental state characterized by feelings of sadness, loneliness, despair, low self-esteem, and self-reproach; accompanying signs include psychomotor retardation or, at times, agitation, withdrawal from interpersonal contact, and vegetative symptoms, such as insomnia and anorexia. The term refers to a mood that is so characterized or a mood disorder.
	Derailment	Gradual or sudden deviation in train of thougth without blocking; sometimes used synonymously with loosening of association.
	Derealization	Sensation of changed reality or that one's surroundings have altered. Usually seen in schizophrenia, panic attacks, and dissociative disorders.
	Dereism	Mental activity that follows a totally subjective and idiosyncratic system of logic and fails to take the facts of realtiy or experience into consideration. Characteristic of schizophrenia.
	Detachment	Characterized by distant interpersonal relationships and lack of emotional involvement.
	Devaluation	Defense mechanism in which a person attributes excessively negative qualities to self or others. Seen in depression and paranoid persnality disorder.
	Diminished libido	Decreased sexual interest and drive.
	Dipsomania	Compulsion to drink alcoholic beverages.
	Disinhibition	(1) Removal of an inhibitory effect, as in the reduction of the inhibitory function of the cerebral cortex by alcohol. (2) In psychiatry, a greater freedom to act in accordance with inner drives or feelings and with less regard for restraints dictated by cultural norms or one's superego.
	Disorientation	Confusion; impairment of awareness of time, place, and person (the position of the self in relation to other persons). Characteristic of cognitive disorders.
	Displacement	Unconscious defense mechanism by which the emotional component of an unacceptable idea or object is trasferred to a more acceptable one. Seen in phobias.
	Dissociation	Unconscious defense mechanism involving the segregation of any group of mental or behavioral processes from the rest of the person's psychic activity; may entail the separation of an idea from its accompanying emotinoal tone, as seen in dissociative and conversion disorders. Seen in dissociative disorders.
	Distractibility	Inability to focus one's attention; the patient does not respond to the task at hand but attends to irrelevant phenomena in the environment.
	Doubling	The feeling that one has a double who is similar in looks, action, and feelings. Also know as Doppelganger phenomenon.
	Dread	Massive or pervasive anxiety, usually related to a specific danger.
	Dreamy state	Altered state of consciousness, likened to a dream situation, that develops suddenly and usually lasts a few minutes; accompanied by visual, auditory, and olfactory hallucinations. Commonly associated with temporal lobe lesions.
	Drowsiness	State of impaired awareness associated with a desire or inclination to sleep.
	Dysarthria	Difficulty in articulation - the motor activity of shaping phonated sounds into speech - not in word finding or in grammar.
	Dyscalculia	Difficulty in performing calculations.
	Dysgeusia	Impaired sense of taste.
	Dysgraphia	Difficulty in writing.
	Dyskinesia	Difficulty in performing movements. Seen in extrapyramidal disorders.
	Dyslalia	Faulty articulation caused by structural abnormalities of the articulatory organs or impaired hearing.
	Dyslexia	Specific learning disability syndrome involving an impairment of the previously acquired ability to read; unrelated to the person's intelligence.
	Dymetria	Impaired ability to gauge distance relative to movements. Seen in neurological deficit.
	Dysmnesia	Impaired memory.
	Dyspareunia	Physical pain in sexual intercourse, usually emotionally caused and more commonly experienced by women; may also result from cystitis, urethritis, or other medical conditions.
	Dyspagia	Difficulty in comprehending oral language (reception dysphasia) or in trying to express verbal language (expressive dysphasia).
	Dysphonia	Difficulty or pain in speaking.
	Dysphoria	Feeling of unpleasantness or discomfort; a mood of general dissatisfaction and restlessness. Occurs in depression and anxiety.
	Dysprosody	Loss of normal speech melody (prosody). Common in depression.
	Dystonia	Extrapyramidal motor disturbance consisting of slow, sustained contractions of the axial or appendicular musculature; one movement often predominates, leading to relatively sustained postural deviations; acute dystonic reactions (facial grimacing and torticollis) are occasionally seen with the initiation of antipsychotic drug therapy.
	Echolalia	Psychopathological repeating of words or phrases of one person by another; tends to be repetitive and persistent. Seen in certain kinds of schizophrenia, particularly the catatonic types.
	Echopraxia	The person imitates the clinician's actions even when asked not to do so.
	Ego-dystonic	Denoting aspects of a person's personality that are viewed as repugnant, unacceptable, or inconsistent with the rest of the personality. Also called ego-alien.
	Egocentric	Self-centered; selfishly preoccupied with one's own needs; lacking interest in others.
	Egomania	Morbid self-preoccupation or self-centeredness. (See also narcissism)
	Ego-syntonic	Denoting aspects of a personality that are viewed as acceptable and consistent with that person's total personality. Personality traits are usally ego-syntonic.
	Eidetic image	Unusually vivid or exact mental image of objects previously seen or imagined.
	Elation	Mood consisting of feelings of joy, euphoria, triumph, and intense self-satisfaction or optimism. Occurs in mania when not grounded in reality.
	Elevated mood	Air of confidence and enjoyment; a mood more cheerful than normal but not necessarily pathological.
	Emotion	Complex feeling state with psychic, somatic, and behavioral components; external manifestation of emotion is affect.
	Emotional insight	A level of understanding or awareness that one has emotional problems. It facilitates positive changes in personality and behavior when present.
	Emotional lability	Excessive emotional responsiveness characterized by unstable and rapidly changing emotions.
	Encopresis	Involuntary passage of feces, usually occurring at night or during sleep.
	Enuresis	Incontinence of urine during sleep.
	Erotomania	Delusional belief, more common in women than in men, that someone is deeply in love with them (also known as de Clerambault syndrome).
	Erythrophobia	Abnormal fear of blushing.
	Euphoria	Exaggerated feeling of well-being that is inappropriate to real events. Can occur with drugs such as opiates, amphetamines, and alcohol.
	Euthymia	Normal range of mood, implying absence of depressed or elevated mood.
	Evasion	Act of not facing up to, or strategically eluding, something; consists of suppressing an idea that is next in a thought series and replacing it with another idea closely related to it. Also called paralogia and perverted logic.
	Exaltation	Feeling of intense elation and grandeur.
	Excited	Agitated, purposeless motor activity uninfluenced by external stimuli.
	Expansive mood	Expression of feelings without restraint, frequently with an overestimation of their significance or importance. Seen in mania and grandiose delusional disorder.
	Expressive aphasia	Disturbance of speech in which understanding remains, but the ability to speak is grossly impaired; halting, laborious, and inaccurate speech (also know as Broca's, nonfluent, and motor aphasias).
	Expressive dysphasia	Difficulty in expressing verbal language; the ability to understand language is intact.
	Externalization	More general term than projection that referes to the tendency to perceive in the external world and in external objects elements of one's personality, including instinctual impulses, conflicts, moods, attitudes, and styles of thinking.
	Extroversion	State of one's energies being directed outside oneself.
	False memory	The recollection and belief by the patient of an event that did not actually occur. In false memory syndrome, persons erroneoulsy believe that they sustained an emotional or physical (e.g. sexual) trauma in early life.
	Fantasy	Daydream; fabricated mental picture of a situation or chain of events. A normal form of thinking dominated by unconscious material that seeks wish fulfillment and solutions to conflicts; may serve as the matrix for creativity. The content of the fantasy may indicate mental illness.
	Fatigue	A feeling of weariness, sleepiness, or irritiability after a period of mental or bodily activity. Seen in depression, anxiety, neurasthenia, and somatoform disorders.
	Fausse reconnaissance	False recognition, a feature of paramnesia. Can occur in delusional disorders.
	Fear	Unpleasurable emotional state consisting of psychophysiological changes in response to a realistic threat or danger.
	Flat affect	Absense or near absence of any signs of affective expression.
	Flight of Ideas	Rapid succession of fragmentary thoughts or speech in which content changes abruptly and speech may be incoherent. Seen in mania.
	Floccillation	Aimless plucking or picking, usually at bedclothes or clothing, commonly seen in dementia and delirium.
	Fluent aphasia	Aphasia characterized by inability to understand the spoken word; fluent but incoherent speech is present. Also called Wernicke's, sensory, and receptive aphasias.
	Folie a deux	Mental illness shared by two persons, usually involving a common delusional system; if it involves three persons, it is referred to as folie a trois, etc. Also called shared psychotic disorder.
	Formal thought disorder	Disturbance in the form of thought rather than the content of thought; thinking characterized by loosened associations, neologisms, and illogical constructs; thought process is disordered, and the person is defined as psychotic. Characteristic of schizophrenia.
	Formication	Tactile hallucination involving the sensation that tiny insects are crawling over the skin. Seen in cocaine addiction and delirium tremens.
	Free-floating anxiety	Severe, pervasive, generalized anxiety that is not attached to any particular idea, object, or event. Observed particularly in anxiety disorders, althought it may be seen in some cases of schizophrenia.
	Fugue	Dissociative disorder characterized by a period of almost complete amnesia, during which a person actually flees from an immediate life situation and begins a different life pattern; apart from the amnesia, mental faculties and skills are usually unimpaired.
	Galactorrhea	Abnormal discharge of milk from the breast; may result from the endocrine influence (e.g., prolactin) of dopamine receptor antagonists, such as phenothiazines.
	Generalized tonic-clonic seizure	Generalized onset of tonic-clonic movements of the limbs, tongue biting, and incontinence followed by slow, gradual recovery of consciousness and cognition; also called grand mal seizure.
	Global aphasia	Combination of grossly nonfluent aphasia and severe fluent aphasia.
	Glossolalia	Unintelligible jargon that has meaning to the speaker but not to the lilstener. Occurs in schizophrenia
	Grandiosity	Exaggerated feelings of one's importance, power, knowledge, or identity. Occurs in delusional disorder and manic states.
	Grief	Alteration in mood and affect consisting of sadness appropriate to a real loss; normally, it is self-limited.
	Guilt	Emotional state associated with self-reproach and the need for punishment. In psychoanalysis, refers to a feeling of culpability that stems from a conflict between the ego and the superego (conscience). Guilt has normal psychological and social functions, but special intensity or absence of guilt characterizes many mental disorders, such as depression and antisocial personality disorder, respectively. Psychiatrists distinguish shame as a less internalized form of guilt that relates more to others than to the self.
	Gustatory hallucination	Hallucination primarily involving taste.
	Gynecomastia	Female-like development of the male breasts; may occur as an adverse effect of antipsychotic and antidepressant drugs because of increased prolactin levles or anabolic-androgenic steroid abuse.
	Hallucination	False sensory perception occurring in the absence of any relevant external stimulation of the sensory modality involved.
	Hallucinosis	State in which a person experiences hallucinations without any impairment of consciousness.
	Haptic Hallucination	Hallucination of touch.
	Hebephrenia	Complex of symptoms, considered a form of schizophrenia, characterized by wild or silly behavior or mannerisms, inappropriate affect, and delusions and hallucinations that are transient and unsystematized. Also referred to as disorganized schizophrenia.
	Holophrastic	Using a single word to express a combination of ideas. Seen in schizophrenia.
	Hyperacusis	Increased sensitivity to sound.
	Hyperactivity	Increased muscular activity. The term is commonly used to describe a disturbance found in children that is manifested by constant restlessness, overactivity, distractibility, and difficulties in learning. Seen in attention deficit hyperactivity disorder.
	Hyperalgesia	Excessive sensitivity to pain. Seen in somatoform disorder.
	Hyperesthesia	Increased sensitivity to tactile stimulation.
	Hypermnesia	Exaggerated degree of retention and recall. It can be elicited by hypnosis and may be seen in certain prodigies; also may be a feature of OCD, some cases of schizophrenia, and manic episodes of bipolar I disorder.
	Hyperphagia	Increase in appetite and intake of food.
	Hyperpragia	Excessive thinking and mental activity. Generally associated with manic episodes of bipolar one disorder.
	Hypersomnia	Excessive time spent asleep. It may be associated with underlying medical or psychiatric disorder or narcolepsy, may be part of the Klein Levin syndrome, or may be primary.
	Hyperventilation	Excessive breathing, generally associated with anxiety, which can reduce blood carbon dioxide concentration and can produce lightheadedness, palpitations, numbness, tingling periorally and in the extremities, and, occasionally, syncope.
	Hypervigilance	Excessive attention to and focus on all internal and external stimuli; usually seen in delusional or paranoid states.
	Hypesthesia	Diminished sensitivity to tactile stimulation.
	Hypnagogic hallucination	Hallucination occurring while falling asleep, not ordinarily considered pathological.
	Hypnopompic hallucination	Hallucination occurring while awakening from sleep, not ordinarily considered pathological.
	Hypnosis	Artificially induced alteration of consciousness characterized by increased suggestibility and receptivity to direction.
	Hypoactivity	Decreased motor and cognitive activity, as and psychomotor retardation; visible slowing of thought, speech, and movements. Also called to hypokinesis.
	Hypochondria	Exaggerated concerns about health that is based not on real medical pathology, but on unrealistic interpretations of physical signs or sensations as abnormal.
	Hypomania	Mood abnormality with the qualitative characteristics of mania but somewhat less intense. Seen in cyclothymic disorder.
	Idea of reference	Misinterpretation of incidents and events in the outside world as having direct personal reference to oneself; occasionally observed in normal persons, but frequently seen in paranoid patients. If present with sufficient frequency or intensity or if organized and systematized, these misinterpretations constitute delusions of reference.
	Illogical thinking	Thinking containing erroneous conclusions or internal contradictions; psychopathological only when it is marked and not caused by cultural values or intellectual deficit.
	Illusion	Perceptual misinterpretation of a real external stimulus.
	Immediate memory	Reproduction, recognition, or recall of perceived material within seconds after presentation.
	Impaired insight	Diminished ability to understand the objective reality of the situation.
	Impaired judgment	Diminished ability to understand a situation correctly and to act appropriately.
	Impulse control	Ability to resist and impulse, drive, or temptation to perform some action.
	Inappropriate affect	Emotional tone out of harmony with the idea, thought, or speech accompanying it. Seen in schizophrenia.
	Incoherence	Communication that is disconnected, disorganized, or incomprehensible.
	Incorporation	Primitive unconscious defense mechanism in which the psychic representation of another person or aspects of another person are assimilated into oneself through a figurative process of symbolic oral ingestion; represents a special form of introjection and is the earliest mechanism of identification.
	Increased libido	Increase in sexual interest and drive.
	Ineffability	Ecstatic state in which persons insist that their experience is inexpressible and indescribable and that it is impossible to convey what it is like to one who never experienced it.
	Initial insomnia	Falling asleep with difficulty; usually seen in anxiety disorder.
	Insight	Conscious recognition of one's condition. In psychiatry, it refers to the conscious awareness and understanding of one's psychodynamics and symptoms of maladaptive behavior; highly important in affecting changes in the personality and behavior of a person.
	Insomnia	Difficulty in falling asleep or difficulty in staying asleep. It can be related to a mental disorder, can be related to a physical disorder or an adverse effect of medication, or can be primary (not related to a known medical factor or another mental disorder).
	Intellectual insight	Knowledge of the reality of a situation without the ability to use that knowledge successfully to effect an adaptive change in behavior or to master the situation.
	Intelligence	Capacity for learning and ability to recall, to integrate constructively, and to apply what one has learned; the capacity to understand and to think rationally.
	Intoxication	Mental disorder caused by a recent ingestion or presence in the body of an exogenous substance producing maladaptive behavior by virtue of its effects on the central nervous system. The most common psychiatric changes involve disturbances of perception, wakefulness, attention, thinking, judgment, emotional control, and psychomotor behavior; the specific clinical picture depends on the substance ingested.
	Intropunitive	Turning anger inward toward oneself. Commonly observed in depressed patients.
	Introspection	Contemplating one's mental processes to achieve insight.
	Irrelevant answer	Answer that is not responsive to the question.
	Irritability	Abnormal or excessive excitability, with easily triggered anger, annoyance, or impatience.
	Irritable mood	State in which one is easily annoyed and provoked to anger.
	Jamais vu	paramnestic phenomenon characterized by a false feeling of unfamiliarity with a real situation that one has previously experienced.
	Jargon Aphasia	Aphasia in which the words produced are neologistic, that is, nonsense words created by the patient.
	Judgment	Mental act of comparing or evaluating choices within the framework of a given set of values for the purpose of electing a course of action. If the course of action chosen is consonant with reality or with mature adult standards of behavior, judgment is said to be intact or normal; judgment is said to be impaired if the chosen course of action is frankly maladaptive, results from impulsive decisions based on the need for immediate gratification, or is otherwise not consistent with reality as measured by mature adult standards.
	Kleptomania	Pathological compulsion to steal.
	La belle indefference	Inappropriate attitude of calm or lack of concern about one's disability. May be seen in patients with conversion disorder.
	Labile affect	Affect of expression characterized by rapid and abrupt changes unrelated to external stimuli.
	Labile mood	Oscillations in mood between euphoria and depression or anxiety.
	Laconic speech	Condition characterized by a reduction in the quantity of spontaneous speech; replies to questions are brief and unelaborated, and little or no unprompted additional information is provided. Occurs in major depression, schizophrenia, and organic mental disorders. Also called poverty of speech.
	Lethologica	Momentary forgetting of a name or proper noun. See blocking.
	Lilliputian hallucination	Visual sensation that persons or objects are reduced in size; more properly regarded as an illusion. See also micropsia.
	Localized amnesia	Partial loss of memory; amnesia restricted to specific or isolated experiences. Also called lacunar amnesia and patch amnesia.
	logorrhea	Copious, pressured, coherent speech; uncontrollable, excessive talking; observed in manic episodes of bipolar disorder. Also called tachylogia, verbomania, and volubility.
	Long-term memory	Reproduction, recognition, or recall of experiences or information that was experienced in the distant past. Also called remote memory.
	Loosing of associations	Characteristic schizophrenic thinking or speech disturbance involving a disorder in the logical progression of thoughts, manifested as a failure adequately to communicate verbally; unrelated and unconnected ideas shift from one subject to another. See also tangentiality.
	Macropsia	False perception that objects are larger than they really are.
	Magical thinking	A form of dereistic thought; thinking similar to that of the preoperational phase in children (Jean Piaget), in which thoughts, words, or actions assume power (e.g., to cause or to prevent events).
	Malingering	Feigning disease to achieve a specific goal, for example, to avoid an unpleasant responsibility.
	Mania	Mood state characterized by elation, agitation, hyperactivity, hypersexuality, and accelerated thinking and speaking (flight of ideas). Seen in bipolar one disorder.
	Manipulation	Maneuvering by patient's to get their own way; characteristic of antisocial personalities.
	Mannerism	Ingrained, habitual involuntary movement.
	Melancholia	Severe depressive state. Used in the term involutional melancholia as a descriptive term and also in reference to a distinct diagnostic entity.
	Memory	Process whereby what is experienced or learned is established as a record in the central nervous system(registration), where it persists with a variable degree of permanence (retention) and can be recollected or retrieved from storage at will (recall).
	Mental disorder	Psychiatric illness or disease whose manifestations are primarily characterized by behavioral or psychological impairment of function, measured in terms of deviation from some normative concept; associated with distress or disease, not just an expected response to a particular event or limited to relations between a person and society.
	Mental retardation	Sub-average general intellectual functioning that originates in the developmental period and is associated with impaired maturation and learning and social maladjustment. Retardation is commonly defined in terms of intelligence quotient (IQ): Mild(between 50 and 55-70), moderate(between 35 and 40 to between 50 and 55), severe (between 20 and 25 to between 35 and 40), and profound (below 20-25).
	Metonymy	Speech disturbance common in schizophrenia in which the affected person uses a word or phrase that is related to the proper one but is not the one ordinarily used; for example, the patient speaks of consuming a menu rather than a meal, or refers to losing the piece of string of the conversation, rather than the thread of the conversation.
	Microcephaly	Condition in which the head is unusually small as a result of defective brain development and premature ossification of the skull.
	Micropsia	False perception that objects are smaller than they really are. Sometimes called lilliputian hallucination.
	Middle insomnia	Waking up after falling asleep without difficulty and then having difficulty in falling asleep again.
	Mimicry	Simple, imitative motion activity of childhood.
	Monomania	Mental state characterized by a preoccupation with one subject.
	Mood	Pervasive and sustained feeling tone that is experienced internally and that, in the extreme, can markedly influence virtually all aspects of a person's behavior and perception of the world. Distinguished from affect, the external expression of the internal feeling tone.
	Mood-congruent delusion	Delusion with content that is mood appropriate (e.g., depressed patients who believe that they are responsible for the destruction of the world).
	Mood-congruent hallucination	Hallucination with content that is consistent with a depressed or manic mood (e.g., depressed patient hearing voices telling them that they are bad persons and manic patients hearing voices telling them that they have inflated worth, power, or knowledge).
	Mood-incongruent delusion	Delusion based on incorrect reference about external reality, with content and has no association to mood or is mood inappropriate (e.g., depressed patients who believe that they are the new Messiah).
	Mood-incongruent hallucination	Hallucination not associated with real external stimuli, with content that is not consistent with depressed or manic mood (e.g., in depression, hallucinations not involving such themes as guilt, deserved punishment, or inadequacy; in mania, not involving such themes as inflated worth or power).
	Mood swings	Oscillation of a person's emotional feeling tone between periods of elation and periods of depression.
	Motor aphasia	Aphasia in which understanding is intact, but the ability to speak is lost. Also called Broca's, expressive, and nonfluent aphasias.
	Mourning	Syndrome following loss of a loved one, consisting of preoccupation with the lost individual, weeping, sadness, and repeated reliving of memories.
	Muscle rigidity	State in which the muscles remaine inmovable; seen in schizophrenia.
	Mutism	Organic or functional absence of the faculty of speech
	Mydriasis	Dilation of the pupil; sometimes occurs as an autonomic (anti-cholinergic) or atropine like adverse effect of some antipsychotic and antidepressant drugs.
	Narcissism	In psychoanalytic theory, divided into primary and secondary types: Primary narcissism, the early infantile phase of object relationship development, when the child has not differentiated the self from the outside world, and all sources of pleasure are unrealistically recognized as coming from within the self, giving the child a false sense of omnipotence; secondary narcissism, when the libido, once attached to external love objects, is redirected back to the self.
	Needle phobia	The persistent, intense, pathological fear of receiving an injection
	Negative signs	M. schizophrenia: flat affect, alogia, abulia, and apathy.
	Negativism	Verbal or nonverbal opposition or resistance to outside suggestions and advice; commonly seen in catatonic schizophrenia in which the patient resists any efforts to be moved or does the opposite of what is asked.
	Neologism	New word or phrase whose derivation cannot be understood; often seen in schizophrenia. It has also been used to mean a word that has been incorrectly constructed but whose origins are nonetheless understandable (e.g., headshoe to mean hat), but such constructions are more properly referred to as word approximations.
	Neurological amnesia	(1) auditory amnesia: Loss of ability to comprehend sounds or speech. (2) tactile amnesia: Loss of ability to judge the shape of objects by touch. See also astereognosis. (3) verbal amnesia; loss of ability to remember words. (4) visual amnesia; loss of ability to recall or to recognize familiar objects or printed words.
	Nihilism	Delusion of the nonexistence of the self or part of the self; also refers to an attitude of total rejection of established values or extreme skepticism regarding moral and value judgments.
	Nihilistic delusion	Depressive delusion that the world and everything related to it hve ceased to exist.
	Noeisis	Revelation in which immense illumination occurs in association with a sense that one has been chosen to lead and command. Can occur in manic or dissociative states.
	nominal aphasia	Aphasia characterized by difficulty in giving the correct name of an object.
	Nymphomania	Abnormal, excessive, insatiable desire in a woman for sexual intercourse.
	Obsession	Persistent and recurrent idea, thought, or impulse that cannot be eliminated from consciousness by logic or reasoning; obsessions are involuntary and ego-dystonic.
	Olfactory hallucination	Hallucination primarily involving smell or odors; most common in medical disorders, especially in the temporal lobe.
	Orientation	State of awareness of oneself and one's surroundings in terms of time, place, and person.
	Overactivity	Abnormality in motor behavior that can manifest itself as psychomotor agitation, hyperactivity (hyperkinesis), tics, sleepwalking, or compulsions.
	Overvalued idea	False or unreasonable belief or idea that is sustained beyond the bounds of reason. It is held with less intensity or duration than a delusion but is usually associated with mental illness.
	Panic	Acute, intense attack of anxiety associated with personality disorganization; the anxiety is overwhelming and accompanied by feelings of impending doom.
	Panphobia	Overwhelming fear of everything.
	Pantomime	Gesticulation; psychodrama without the use of words.
	Paramnesia	Disturbance of memory in which reality and fantasy are confused. It is observed in dreams and in certain types of schizophrenia and organic mental disorders; includes phenomena such as déjà vu and deja entendu, which may occur occasionally in normal persons.
	Paranoia	Rare psychiatric syndrome marked by the gradual development of a highly elaborate and complex delusional system, generally involving persecutory or grandiose delusions, with few other signs of personality disorganization or thought disorder.
	Paranoid delusions	Includes persecutory delusions and delusions of reference, control, and grandeur.
	Paranoid ideation	Thinking dominated by suspicious, persecutory, or grandiose content of less than delusional proportions.
	Paraphasia	Abnormal speech in which one word is substituted for another, the irrelevant word generally resembling the required one in morphology, meaning, or phonetic composition; the inappropriate word may be a legitimate one used incorrectly, such as Clover instead of hand, or a bizarre nonsense expression, such as treen instead of train. Paraphasic speech may be seen in organic aphasias and in mental disorders such as schizophrenia.
	Parapraxis	Faulty act, such as a slip of the tongue or the misplacement of an article. Freud described parapraxes to unconscious motives.
	Paresis	Weakness or partial paralysis of organic origin.
	Paresthesia	Abnormal spontaneous tactile sensation, such as a burning, tingling, or pins and needles sensation.
	Perception	Conscious awareness of elements in the environment by the mental processing of sensory stimuli; sometimes used in a broader sense to refer to the mental process by which all kinds of data-intellectual, emotional, and sensory-are meaningfully organized.
	Perseveration	(1) pathological repetition of the same response to different stimuli, as in a repetition of the same verbal response to different questions. (2) persistent repetition of specific words or concepts in the process of speaking. Seen in cognitive disorders, schizophrenia, and other mental illnesses.
	Phantom limb	False sensation that an extremity that has been lost is, in fact, present.
	Phobia	Persistent, pathological, unrealistic, intense fear of an object or situation; the phobic person may realize that the fear is irrational but, nonetheless, cannot spell it.
	Pica	Craving and eating of nonfood substances, such as paint and clay.
	Polyphagia	Pathological overeating.
	Positive signs	In schizophrenia: Hallucinations, delusions, and thought disorder.
	Posturing	Strange, fixed, and bizarre bodily positions held by a patient for an extended time.
	Poverty of content of speech	Speech that is adequate in amount but conveys little information because of vagueness, emptiness, or stereotyped phrases.
	Poverty of speech	Restriction in the amount of speech she used; replies maybe monosyllabic. See also laconic speech.
	Preoccupation of thought	Centering of thought content on a particular idea, associated with a strong affective tone, such as a paranoid trend or suicidal or homicidal preoccupation.
	Pressured speech	Increase in the amount of spontaneous speech; rapid, loud, accelerated speech, as occurs in mania, schizophrenia, and cognitive disorders.
	Primary process thinking	In psychoanalysis, the mental activity directly related to the functions of the id and characteristic of unconscious mental processes; marked by primitive, pre-logical thinking and by the tendency to seek immediate discharge and gratification of instinctual demands. Includes thinking that is dereistic, illogical, magical; normally found in dreams, abnormally in psychosis.
	Projection	Unconscious defense mechanism and which persons attribute to another those generally unconscious ideas, thoughts, feelings, and impulses that are in themselves undesirable or unacceptable, as a form of protection from anxiety arising from and inner conflict; by externalizing whatever is unacceptable, they deal with it as a situation apart from themselves.
	Prosopagnosia	Inability to recognize familiar faces that is not do to impaired visual acuity or level of consciousness.
	Pseudocyesis	Rare condition in which a nonpregnant patient has the signs and symptoms of pregnancy, such as abdominal distention, breast enlargement, pigmentation, cessation of menses, and morning sickness.
	Pseudodementia	(1) Dementia like disorder that can be reversed by appropriate treatment and is not caused by organic brain disease. (2) condition in which patients show exaggerated indifference to their surroundings in the absence of a mental disorder; also occurs in depression and factitious disorders.
	Pseudologia phantastica	Disorder characterized by uncontrollable lying in which patient's elaborate extensive fantasies that they freely communicate and act on. AKA mythomania, compulsive lying
	Psychomotor agitation	Physical and mental overactivity that is usually nonproductive and is associated with a feeling of inner turmoil, as seen in agitated depression.
	Psychosis	Mental disorder in which the thoughts, affective response, ability to recognize reality, and ability to communicate and relate to others are sufficiently impaired to interfere grossly with the capacity to deal with reality; the classical characteristics of psychosis are impaired reality testing, hallucinations, delusions, and illusions.
	Psychotic	(1) person experiencing psychosis. (2) denoting or characteristic of psychosis.
	Rationalization	An unconscious defense mechanism in which irrational or unacceptable behavior, motives, or feelings are logically justified or made consciously tolerable by plausible means.
	Reaction formation	Unconscious defense mechanism in which a person develops a socialized attitude or interest that is the direct antithesis of some infantile wish or impulse that is harbored consciously or unconsciously. One of the earliest and most unstable Defense mechanisms, closely related to repression; both are defenses against impulses or urges that are unacceptable to the ego.
	Reality testing	Fundamental ego function that consists of tentative actions that test and objectively evaluate the nature and limits of the environment; includes the ability to differentiate between the external world and the internal world and accurately to judge the relation between the self and the environment.
	Recall	Process of bringing stored memories into consciousness.
	Recent memory	Recall of events over the past few days.
	Recent past memory	Recall of events over the past few months.
	Receptive aphasia	Organic loss of ability to comprehend the meaning of words; fluid and spontaneous, but incoherent and nonsensical, speech.
	Receptive dysphasia	Difficulty in comprehending oral language; the impairment involves comprehension and production of language.
	Regression	Unconscious defense mechanism in which a person undergoes a partial or total return to earlier patterns of adaption; observed in many psychiatric conditions, particularly schizophrenia.
	Remote memory	Recall of events in the distant past.
	Repression	Freud's term for an unconscious defense mechanism in which unacceptable mental contents are banished or kept out of consciousness; important in normal psychological development and in neurotic and psychotic symptom formation. Freud recognized two kinds of repression: (1) repression proper, in which the repressed material was once in the conscious domain, and (2) primal repression, in which the repressed material was never in the conscious realm.
	Restricted affect	Reduction in the intensity of feeling tone that is less severe than in blunted affect but clearly reduced.
	Retrograde amnesia	Loss of memory for events preceding the onset of the amnesia.
	Retrospective falsification	Memory becomes unintentionally (unconsciously) distorted by being filtered through a persons present emotional, cognitive, and experiential state.
	Rigidity	In psychiatry, a person's resistance to change, a personality trait.
	Ritual	(1) formalized activity practiced by a person to reduce anxiety, as in OCD. (2) ceremonial activity of cultural origin.
	Rumination	Constant preoccupation with thinking about a single idea or theme, as and OCD.
	Satyriasis	Morbid, insatiable sexual need or desire in a man.
	Scotoma	(1) in psychiatry, a figurative blind spot in a person's psychological awareness. (2) in neurology, a localized visual field defect.
	Secondary process thinking	In psychoanalysis, the form of thinking that is logical, organized, reality oriented, and influenced by the demands of the environment; characterizes the mental activity of the ego.
	Seizure	In attack or sudden onset of certain symptoms, such as convulsions, loss of consciousness, and psychic or sensory disturbances; seen in epilepsy and can be substance induced.
	Sensorium	Hypothetical sensory center in the brain that is involved with clarity of awareness about oneself and one's surroundings, including the ability to perceive and to process ongoing events in light of past experiences, future options, and current circumstances; sometimes used interchangeably with consciousness.
	sensory aphasia	Organic loss of ability to comprehend the meaning of words; fluid and spontaneous, but incoherent and nonsensical, speech.
	Sensory extinction	Neurological sign operationally defined as failure to report one of two simultaneously presented sensory stimuli, despite the fact that either stimulus alone is correctly reported. Also called sensory inattention
	Shame	Failure to live up to self expectations; often associated with a fantasy of how the person will be seen by others.
	Short-term memory	Reproduction, recognition, or recall of perceived material within minutes after the initial presentation.
	Simultanagnosia	Impairment in the perception or integration of visual stimuli appearing simultaneously
	Somatic delusion	Delusion pertaining to the functioning of one's body.
	Somatic hallucination	Hallucination involving the perception of a physical experience localized within the body.
	Somatopagnosia	Inability to recognize a part of one's body as one's own (also called ignorance of the body and autotopagnosia).
	Somnolence	Pathological sleepiness or drowsiness from which one can be aroused to a normal state of consciousness
	Spatial agnosia	Inability to recognize spatial relations.
	Speaking in tongues	Expression of a regulatory message through unintelligible words; not considered a disorder of thought if associated with practices of specific Pentecostal religions.
	Stereotypy	Continuous mechanical repetition of speech or physical activities; observed in catatonic schizophrenia.
	Stupor	(1) state of decreased reactivity to stimuli and less than full awareness of one's surroundings; as a disturbance of consciousness, it indicates a condition of partial coma or semicoma. (2) in psychiatry, it is used synonymously with mutism and does not necessarily imply a disturbance of consciousness; in catatonic stupor, patients are ordinarily aware of their surroundings.
	Stuttering	Frequent repetition or prolongation of a sound or syllable, leading to markedly impaired speech fluency.
	Sublimation	Unconscious defense mechanism in which the energy associated with unacceptable impulses or drives is diverted into personally and socially acceptable channels; unlike other defense mechanisms, it offers some minimal gratification of the instinctual drive or impulse.
	Substitution	Unconscious defense mechanism in which a person replaces in unacceptable wish, drive, emotion, or goal with the one that is more acceptable.
	Suggestibility	State of uncritical compliance with influence or of uncritical acceptance of an idea, belief, or attitude; commonly observed among persons with hysterical traits.
	Suicidal ideation	Thoughts or acts of taking one's life.
	Suppression	Conscious act of controlling and inhibiting an unacceptable impulse, emotion, or idea; differentiated from repression in that repression is an unconscious process.
	Symbolization	Unconsciousness defense mechanism in which one idea or object comes to stand for another because of some common aspect or quality in both; based on similarity and association; the symbols formed protect the person from the anxiety that may be attached to the original idea or object.
	Synesthesia	Condition in which the stimulation of one sensory modality is perceived as sensation in a different modality, as when a sound produces a sensation of color.
	Syntactical aphasia	Aphasia characterized by difficulty in understanding broken speech, associated with gross disorder of thought and expression.
	Systematized delusion	Group of elaborate delusions related to a single event or theme.
	Tactile hallucination	Hallucination primarily involving the sense of touch. Also called haptic hallucination.
	Tangentiality	Oblique, digressive, or even irrelevant manner of speech in which the central idea is not communicated.
	Tension	Physiological or psychic arousal, uneasiness, or pressure toward action; an unpleasurable alteration in mental or physical state that seeks relief through action.
	Terminal insomnia	Early morning awakening or waking up at least 2 hours before planning to wake up.
	Thought broadcasting	Feeling that one's thoughts are being broadcast or projected into the environment.
	Thought disorder	Any disturbance of thinking that affects language, communication, or thought content; the hallmark feature of schizophrenia. Manifestations range from simple blocking and mild circumstantiality to profound loosening of associations, incoherence, and delusions; characterized by failure to follow semantic and syntactic rules that is inconsistent with the persons education, intelligence, or cultural background.
	Thought insertion	Delusion that thoughts are being implanted in one's mind by other people or forces.
	Thought latency	The period of time between a thought in its verbal expression. Increased in schizophrenia (see blocking) and decreased in mania (see pressured speech).
	Thought withdrawal	Delusion that one's thoughts are being removed from one's mind by other people or forces.
	Tic disorders	Predominantly psychogenic disorders characterized by an involuntary, spasmodic, stereotyped movement of small groups of muscles; seen most predominately in moments of stress or anxiety, rarely as a result of organic disease.
	Tinnitus	Noises in one or both ears, such as ringing, buzzing, or clicking; an adverse effect of some psychotropic drugs.
	Tonic convulsion	Convulsion in which the muscle contraction is sustained.
	Trailing phenomenon	Perceptual abnormality associated with hallucinogenic drugs in which moving objects are seen as a series of discrete and discontinuous images.
	Trance	Sleep-like state of reduced consciousness and activity.
	Tremor	Rhythmical alteration in movement, which is usually faster than one beat a second; typically, tremors decrease during periods of relaxation and sleep and increase during periods of anger and increased tension.
	True insight	Understanding of the objective reality of a situation coupled with the motivational and emotional impetus to master the situation or change behavior.
	Twilight state	Disturbed consciousness with hallucinations.
	Twirling	Sign of present in autistic children who continually rotate in the direction in which their head is turned.
	Unconscious	(1) one of three divisions of Freud's topographic theory of the mind (the others being the consciousness and the preconscious) in which the psychic material is not readily accessible to conscious awareness by ordinary means; its existence may be manifest in symptom formation, in dreams, or under the influence of drugs. (2) in popular (but more ambiguous) usage, any mental material not in the immediate field of awareness. (3) denoting a state of unawareness, with lack of response to external stimuli, as in a coma.
	Undoing	Unconscious primitive defense mechanism, repetitive in nature, by which a person symbolically acts out in reverse something unacceptable that has already been done or against which the ego must defend itself; a form of magical expiatory action, commonly observed in OCD.
	Unio Mystica	Feeling of mystic unity with an infant power.
	Vegetative signs	In depression, denoting characteristic symptoms such as sleep disturbance (especially early morning awakening), decreased appetite, constipation, weight loss, and loss of sexual response.
	Verbigeration	Meaningless and stereotyped repetition of words or phrases, as seen in schizophrenia. Also called cataphasia.
	Vertigo	Sensation that one or the world around one is spinning or revolving; a hallmark of vestibular dysfunction, not to be confused with dizziness.
	Visual agnosia	Inability to recognize objects or persons.
	Visual hallucination	Hallucination primarily involving the sense of sight.
	Waxy flexibility	Condition in which a person maintains the body position into which he or she is placed. Also called catalepsy.
	Word approximation	Use of conventional words in an unconventional or inappropriate way (metonymy or of new words that are developed by conventional rules of word formation) (e.g., hand shoes for gloves and time measure for clock); distinguished from a neologism, which is a new word whose derivation cannot be understood.
	Word salad	Incoherent, essentially incomprehensible mixture of words and phrases commonly seen in far advanced cases of schizophrenia.
	Xenophobia	Abnormal fear of strangers.
	Zoophobia	Abnormal fear of animals.

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