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30 Cards in this Set
- Front
- Back
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DSM 4 def.
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IQ below 70 (2 st dev below mean)
onset before 18 (dementia after) concurrent impairment of adaptive fxning |
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types of adaptive fxning
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comm, self care, everyday living skills, usually through interview
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Mild MR
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IQ 50-70
85% of people, often blend into society first diag. when go to school need help occasionally (taxes, etc) can marry, work, grad HS |
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Moderate MR
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IQ 35-55 10%
diag in preschool years organic cause (fragile X) 2nd-3rd grade level variable supervision, most partially dependent (60%) |
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Severe MR
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IQ 20-40
3-4% organic causes; concurrent motor and neuro problems poorly developed comm skills close supervision for whole life. can learn some basic care |
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Profound MR
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20-25
1-2% deficits in cognitive, motor, comm total supervision organic causes |
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severity unspecified
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can't classify b.c can't take tests
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boarderline
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70-84; wont' notice
tough in school b.c don't qualify for special ed can't keep up with peers |
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MR prevalence
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1%
2-3% IQ under 70 |
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MR Etiology
Genetic |
crhomosome (Downs')
single gene parder wili, williams |
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MR Etiology
congenital |
CNS (neural tube)
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MR Etiology
exposure |
maternal infection
teratogen toxemia/placental insufficiency trauma |
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MR Etiology
postnatal |
infections (encephalitis)
toxins (lead) lack of stimulation |
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MR Etiology
unknown |
30-50%
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Down's syndrome
causes |
b amyloid over production
hypotonia - need PT better visual than auditory |
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Down's syndrome
other risk |
depression
alzheimers type dementia |
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Fragile X
cause |
XLR, triplet repeat
FMR1 gene |
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Fragile X
features |
short with long face
double jointed hyperactivity, shyness Verbal IQ>performance austistic symptoms |
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Fetal Alcohol syndrome
when impt |
Trimester
III > II > I |
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Fetal Alcohol syndrome
physical features |
midface hypoplasia, great variablility, thin upper lip
primary microcephaly eyes small and far apart mild MR, irritability |
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Prader Willi
features |
paternal 15 delection
hyperphagia |
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Prader Willi
physical features |
small hands and feet, short
hypotnia (can bend backwards) scoliosis failure to thrive at birth |
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Prader Willi
behavior |
complusive, hoarding, impulsive
strong visual, jigsaw puzzle |
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angelman
features |
deletion 15 maternal
wide mouth, thin upper lip smal head epilepsy profound MR IQ30 laugh |
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Williams
features |
ch 7q11 deletion
broad forehead, depressed nasal bridge dots in iris, widely speaced teeth talks a lot with little content |
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crid u chat
features |
5 del
found face, prenatal growth retardation small, low fxn severe MR |
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neurofibromatosis type 1
NF1 physical features |
NF1 gene 17q11 mutated
cafe au lait spots lisch nodules on iris, macrocephaly |
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neurofibromatosis type 1
NF1 behavioral |
speech and lang difficulty
10% moderate MR verbal better than performance ADHD inc in anxiety disorders |
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comorbities of MR
4X inc risk |
ADHD
disrubptive behavior impulse control anxiety - difficult at yo 17 as peers move on |
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moderate MR
adult |
more medical complications b.c cause is organic
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