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206 Cards in this Set
- Front
- Back
macule
|
non-palpable area, change of color < 5mm
|
|
patch
|
nonpalpable area, change of color, >5mm
aka large macule |
|
papule
|
elevated, lesions 5mm
lichen planus |
|
nodule
|
elevated lesions 5mm - 5cm
compound nevus |
|
tumor
|
elevated palpable lesion, up to 5cm
squamous cell carcinoma |
|
plaque
|
papule larger in area than in thickness, >2 cm in diameter
psoriasis |
|
vesicle, bulla
|
fluid -containing lesion, elevated
vesicle 1/2cm bulla larger vesicle: herpes simplex bulla: bullous pemphigoid |
|
pustule
|
elevated lesion containing pus
acne vulgaris |
|
cyst
|
tumor containing liquid or semi-solid material
epidermal cyst |
|
wheal
|
transitory palpable lesion due to edema in upper dermis
ex: hives |
|
burrow
|
linear trail produced by parasites
example: scabies |
|
scale
|
excessive accumulation of loosely adherent keratin
ex: psoriasis (thick scale) pityriasis rosea (fine scale) |
|
crust
|
accumulation of serum, cellular bacterial, squamous debris over damaged epidermis
ex: impetigo |
|
fissure
|
crack in epidermis extending into papillary dermis
hand eczema |
|
lichenification
|
areas of accentuated skin markings
thickening of epidermis scratching or rubbing neurodermatitis |
|
erosion
|
loss of epidermis
heals without scarring impetigo |
|
ulcer
|
loss of epidermis and part/all of dermis
heals with scarring |
|
excoriation
|
linear erosions
self-induction implied but cause unknown scabies |
|
scar
|
fibrous tissue replacing normal architecture of dermis
|
|
epidermal atrophy
|
thinning of epidermis; discoid lupus erythematous
|
|
dermal atrophy
|
decrease in collagen/mucosubstances causing depression of skin; atrophy following steroids
|
|
verrucous
|
wart-like
verruca vulgaris |
|
pedunculated
|
on stalk
|
|
sessile
|
not on stalk
|
|
pigmentation
|
discoloration of skin; melanin, foreignsubstances, or hemorrhage
|
|
telangiectasia
|
dilatation of superficial vessel
|
|
eczematoid
|
inflammatory lesions with scale, vesiculation, crust, and weeping
ex: poison ivy dermatitis |
|
circinate
|
circular lesions
herald patch of pityriasis rosea |
|
annular
|
ringshaped lesion with active margin adn clear center
ringworm |
|
discoid
|
disk-shaped
discoid lupus erythematous |
|
nummular
|
coin-shaped
nummular eczema |
|
gutate
|
drop-sized
guttate psoriasis |
|
iris lesion
|
target lesion; two or three circles form true iris
erythema multiforme |
|
herpetiform
|
grouped (vesicles, papules, excoriations)
herpes simplex |
|
reticulated
|
net-like distribution
livedo reticularis |
|
morbilliform
|
small confluent macules
irrgular shapes |
|
confluent
|
blending into adjacent lesions
|
|
straight (linear)
|
excoriations
|
|
arcuate
|
arc-shaped
|
|
serpiginous
|
snaked shaped
hives |
|
zosteriform
|
linear dermatome
herpes zoster (shingles) |
|
koebner's isomorphic phenomenon
|
lesions forming in areas of previous trauma to skin
ex: psoriasis, lichen plnaus, warts |
|
5 basic morphologic groups
|
papulosquamous
vesicular/bullous vascular rxn dermatitis-eczema tumor nodule |
|
atopic triad
|
asthma
allergic rhinitis atopic eczema |
|
keratosis pilaris
|
perifollicular hyperkeratoses seen pimarily over extensor surfaces of arms and thighs
seen with atopic dermatitis |
|
dennie's lines or pleats
|
"extra" fold of lower eyelid
seen with atopic dermatitis |
|
white dermographism
|
seen with atopic dermatitis
|
|
pathogenesis of atopic dermatitis (5)
|
1) IgE elevated; th2
2) increased il4, il5, il13 by cd4 th2 cells; decrease ifn-gamma by th1 3) increased camp catabolism... increased pge2, il10 4) superantigen stimulation of tcell activation 5) food hypersensitivity |
|
mutation in atopic dermatitis and ichthyosis vulgaris
|
fillagrin
|
|
differential diagnosis of atopic dermatitis
|
seborrheic dermatitis
contact dermatitis psoriasis |
|
management of AD
|
avoid soaps/h20
topical steroids antihistamines moisturizers UV |
|
80% of hemangiomas are
|
single lesions
|
|
rapid growth phase of hemangiomas seen in the first _______
|
6-9 months of life
|
|
resolution of hemangiomas is the rule by _____
|
10-12 years of age
|
|
therapy for hemangioma
|
reassurance is adequate for most
- soaks, vaseline, topical antibiotics - prednisone - intralesional corticosteroids - interferon a-2a/a-2b - surgical excision |
|
5 types of dermal malformation
|
capillary (portwine)
venous lymphatic artieral combination |
|
vascular malformations do/do not regress
|
DO NOT
|
|
kasabach-merritt syndrome
|
variously sized hemangiomas. platelet sequestration --> thrombocytopenia
|
|
sturge-weber syndrome
|
capillary malformation (port-wine) in distribution of V1 with ipsilateral meningeal and cortical vascular malformation.
seizures- 80% hemiplegia 30% mental retardation 60% need to check for glaucoma |
|
klippel-trenaunay-weber syndrome
|
ipsilateral hypertrophy of a limb or body part with capillary/venous malformations
bone and soft-tissue hypertorphy |
|
PHACES syndrome
|
posterior fossa malformation
hemangiomas arterial anomalies coaractation of aorta eye anomalies sternal clefts rare assocaiton of hemangioma with developmental anomalies |
|
phaces sydnrome
|
associated with cerebrovascualr anomalies and endocrine dysfunction
|
|
fungi cell wall made of
|
chitin
|
|
fungi cell wall made of
|
ergosterol
|
|
azoles
|
inhibit ergosterol
|
|
allylamines
|
inhibit ergosterol
|
|
candins
|
attach to chitin
|
|
tinea capitis and onychomycosis must be treated _____
|
systemically
|
|
examples of deep fungal dz
|
blastomycosis
cryptococcosis coccidiodomycosis actinomycosis histoplasmosis |
|
host defense mechanisms
|
alpha-2 macroglobulin keratinase inhibitor
complement activation --> phagocytosis antifungal antibody cell mediated immunity (lymphocytes and lymphokines) serum inhibitory factor: unsaturated transferrin epidermal desquamation |
|
3 clinical types of tinea capitis
|
grey patch
black dot kerion |
|
3 clinical types of tinea pedis
|
interdigital
dry scaly vesicular |
|
tinea capitis mostly pediatric or adult disroder
|
pediatric
|
|
tinea pedis mostly a pediatric or adult disorder
|
adult
|
|
common mimic of tinea cruris
|
corynebacterium erythrasma
|
|
does tinea cruris affect scrotal skin
|
no
|
|
what is majocchi's granuloma
|
deep invasion of fungi intinea corporis
|
|
what enhances infection in tinea corporis
|
topical steroids; suppresses natural inflammatory host response and scale
|
|
laboratory test for tinea versicolor
|
KOH preparation
|
|
seborrheic keratosis
|
superficial, stuck on skin lesion, verrucous surface, hyperpigmentation
no malignant potential |
|
dermatosis papulosa nigra
|
multiple small seborrheic keratosis on face, particularly the malar area of darker skinned individuals
|
|
sign of lesar-trelat
|
rapid widespread onset of seborrheic keratosis.
can be associated with internal malignancy |
|
rx of seborrheic keratosis
|
excision not necessary. often treated only when irritated.
laser, curettage, electrodessication, simple shave or liquid nitrogen |
|
acrochordon
|
skin tag.
fleshy, exophytic, papillomatou skin lesion in mid age neck, axilla, inguinal folds, under breasts, waist or bra-line |
|
acrochordon is often associated with
|
seborrheic keratoses
|
|
therapy of acrochordon
|
none. benign
|
|
dermatofibroma
|
reddish-brown, firm papule on extremitis in middle-aged women.
dimple sign with compression |
|
is dermatofibroma benign/malignant?
|
benign.
does not evolve into dermatofibroma sarcoma protuberans. no therapy required |
|
neurofibroma
|
small, firm, flesh-colored papules. solitary or multiple.
multiple lesions associated with internal neurofibromas and cafe-au-lait spots |
|
von recklinghausen's dz
|
mutliple neurofibroma skin lesions assoc. w/ internal neurofibromas and cafe-au-laid spots
|
|
lipoma
|
soft, rounded, moveable, nontender, subcatneous tumor.
single or multiple. looks like a cyst, without central puncta. |
|
growth rate for lipoma
|
slow.
may grow to large size and infiltrate deeply. |
|
lipomas incidence higher in ____
|
obese, diabetes, high cholesterol.
|
|
if you see lipoma, need to consider
|
liposarcoma.
|
|
most susceptible areas to keloid formation
|
sternum, neck, ears, back, and legs
|
|
rx for keloids
|
corticosteroid injections
silicone occlusion laser cryotherapy compression alpha-interferon excision irradiation |
|
cherry hemangioma
|
dilated capillaries and postcapillary venules.
presents as well-demarcated, small red papule on older adult skin. |
|
sebaecous cyst, epidermal inclusion cyst
causes |
dermal nodule or tumor with central puncta/opening that expresses cheesy material
causes: acne men> woman |
|
multiple sebaecous cysts, think of ____
|
gardner's syndrome
|
|
pilar cyst
|
usually in scalp, occasionally on face.
benign. clinically indistinguishable from epidermal cyst. |
|
milium
|
small < 3, white/yellow papule.
de novo, burns, trauma, occlusion, no rx required |
|
ephelides
|
freckles
|
|
lentigines
|
solar lentigo: age or liver spots
childhood lentigo may be associated with systemic defects |
|
melanocytic nevus
|
melanocytic lesion.
congenital nevi: shortly after birth up to age 2 |
|
acquired nevocellular nevus
|
acquired in 3rd decade
|
|
halo nevus
|
hypopigmented area around a junctional nevus;
associated with vitiligo and malignant melanoma. no therapy rquired, but histo exam necessary if suspect MM. |
|
dysplastic nevus syndrome
|
unusual looking mole.
multiple. paitnet develops melanomas. |
|
non-syndrome associated dysplastic nevi
|
fewer lesions, solitary. not associated with melanomas.
|
|
basal cell carinoma is a tumor of ______
|
keratinocytes
|
|
biggest predisposing factor for BCC
|
sunlight exposure.
others: radiotherapy, arsenic ingestion, congenital disorders xeroderma pigmentosum, basal cell nevus syndrome. |
|
BCC: metasis rare or common
|
rare
|
|
BCC: invasive or noninvasive
|
invasive, but slow growing.
|
|
RX for BCC
|
removal: > 90% cure.
imiquimod (aldara): topical cream: immune modular that treats actinic keratoses and superficial BCC. |
|
actinic keratosis is a ______-
|
precancerous lesion of keratinocyte
|
|
what does actinic keratosis feel like
|
rough/sandpaper feel
|
|
actinic keratosis potentially could turn into ____
|
squamous cell carcinoma
|
|
actinic keratosis is localized to ___-
|
sunexposed areas
|
|
bowen's disease is very common in ____
|
patients exposed to arsenic
|
|
bowen's dz has increased ____
|
incidence of internal malignancy.
|
|
squamous cell carcinoma is a tumor of ___
|
keratinocytes
|
|
SCC could metastasize to
|
local lymph nodes, liver, lung, bone, brain.
could spread perineurally |
|
keratoacanthoma is a ____
|
well-differentiated SCC.
tumor with central crater or keratinous plug. |
|
Keratoacanthoma is benign/malignant
|
benign. rarely malignant.
spontaneous regression possible. |
|
dermatofibroma sarcoma protuberans
|
tumor of fibroblasts. red-brown, infiltrative nodules.
|
|
lentigo maligna
|
hutchinson's freckle.
older individuals (65+) melanoma in situ. removal indicated. |
|
lentigo maligna melanoma
|
like hutchinson's freckle, but more invasive
|
|
superficial spreading melanoms (SSM)
|
70% of melanomas.
flat, but can have nodules. found on trunk of men and posterior thigh of women |
|
nodular melanoma
|
second most common type of melanoma
|
|
acral-lentiginous
|
melanoma on an acral surface.
late diagnosis. in people of dark skin. |
|
most important indicator of invasion
|
breslow's thickness
|
|
clark's level
|
level of invasion.
|
|
what does retinoin do?
|
reverses altered keratinization and diminishes sebum production
|
|
side effects of retinoic acid
|
teratogenicity,
xerosis cheilitis hypertriglycemidia |
|
rosacea onset typically after ____
|
age 30
|
|
4 clinical features
|
central facial erythema and telangiectasis
papules/pustules; no comedomes eye involvmeent: blephartiis, conjuctivitis, keratitits rhinophyma |
|
what is seborrheic dermatitis
|
chronic, superficial, inflammatory process affecting hair regions of the body: esp. scalp, eyebrows, face
|
|
seborrheic dermatitis might be allergic reactiont to
|
pityrosporum
|
|
clinical lesions of seborrheic dermatitis
|
patches/plaques with indistinct margins,
mild-to-moderate erythema yellowish, greasy scaling |
|
rx for seborrheic dermatitis
|
medicated shampoos
topical corticosteroids lotions/solutions topical antimicrobial agents |
|
impetigo
|
golden-crusted erosions
superficial bullae vesicles with turbid fluid |
|
expansion of impetigo
|
annular pattern
|
|
body parts where impetigo found ____
|
face, hands, genitalia, scalp
|
|
impetigo does/does not have constituional symptoms
|
does not
|
|
what is ecthyma
|
deep impetigo often on legs; heals with scars
|
|
streptococcus impetigo
|
usually nonbullous
|
|
staphyloccocus impetigo
|
commonly bullae and pustules
|
|
complication of impetigo
|
postreptococcal glomerulonephritis
|
|
rx of impetigo
|
gentle removal of crusts, washing of lesions, topical antibiotics (muciprocin)
systemic antibiotics |
|
folliculitis is
|
infeciton of hair folilcles
|
|
bockhart's impetigo
|
superficial folliculitis.
dome-shaped, yellow pustules on a red base with hair shaft in th emiddle. |
|
superficial folliculitis is more commonly seen in children/adults
|
children.
|
|
causative agent of superficial folliculitis
|
staph. aureus
|
|
gram-negative folliculitis mainly occurs ____
|
as superinfection in acne patients receiving long-term systemic antibiotic therapy.
|
|
causative agents of gram-negative folliculitis
|
klebsiella
enterobacter proteus |
|
rx for gram-neg folliculitis
|
oral antibiotics
retinoids |
|
pseudomonas aeruginosa folliculitis
|
6 hours - 5 days after use of hot tub/jacuzzi.
often, no rx necessary |
|
folliculitis barbae (sycosis barbae0
|
deep-seated folliculitis of the bearded area.
staphylococcal origin. rx: antibiotics |
|
furuncles
|
painful, circumscribed, perifollicular, staph abscess with tendency to central necrosis and suppuration
|
|
nodules of furuncles
|
deep, red, tender
|
|
rx of furuncles
|
warm, moist compress
if severe: incision/draining, systemic antibiotics |
|
carbuncles
|
large dep -seated, staphyloccocal abscess, made of aggregates of interconnected furuncles that drain at multiple points on the skin.
|
|
carbuncles usually seen in men or women?
|
men
|
|
where on body is carbuncles seen?
|
back of neck, shoulders, buttocks, hip joint/thighs
|
|
carbuncles do or do not have constitutional symptoms
|
do
|
|
carbuncles may or may not present with pain
|
may
|
|
cellulitis
|
acute suppurative inflammation of deeper subcutaneous tissues of the skin.
|
|
causative agents of cellulitis
|
group A beta-hemolytic streptococci
or Staphyloccocus aureus |
|
rx of cellulitis
|
systemic antibiotics
|
|
erysipelas
|
superificla form of cellulitis with well-demarcated border
|
|
erysipelas causative agent
|
group A streptococcus
|
|
most common location of erysipelas
|
face
|
|
what is erythrasma
|
superificail bacterial infection of skin caused by corynebacterium minitussimum
|
|
causative agent of erythrasma
|
corynebacterium minitussimum
|
|
where does erythrasma present?
|
groin/axillae, maybe toe webs
|
|
erythrasma frequently seen in______
|
obese, diabetic, debilitated patients
|
|
wood's lamp examination?
|
coral red fluoresence of erythrasma
|
|
rx of erythrasma?
|
topical/oral antibiotics (erythromycin)
|
|
herpetic whitlow
|
vesicles on erythematous base
herpes simplex |
|
gingivostomatitis
|
herpes simples; vesicle, regional adenopathy, subsequent erosions
|
|
eczema herpeticum
|
generalized herpes on entire body in atopic eczema
|
|
genital vulvovaginitis
|
veneral transmission;
vesicle on erythematous base; fever, malaise, lymphadenopathy |
|
aphthous stomatitis
|
discrete yellowish ulceration with surrounding erythema on buccal mucosa
herpes simplex |
|
tzanck smear
|
herpes simplex lab test
|
|
chicken pox incubation period
|
2- 3 weeks
|
|
pityriasis rosea does/does not spare palms and soles
|
does.
this is one way to differentiate from syphilis, which involves palms/soles |
|
psoriasis mostly exists on extensor or flexural surface?
|
extensor
|
|
is dysplastic nevus benign or malignant?
|
benign
|
|
fungi have what kind of growth?
|
dimorphic
|
|
what are clinical symptoms of tinea capitis?
|
alopea + pruritus
|
|
bright red skin lesions with satellite pustules...dx?
|
candidiasis
|
|
erysipelas does/does not have well demarcated border
|
does
|
|
common cause of erysipelas?
|
strep pyogenes
|
|
how would you diagnose erythrasma in a patient?
|
wood's lamp...see coral red fluorescence
|
|
treatment for erythrasma?
|
erythromycin
|
|
what is this?
ordinary sessile papules with rough gray surface, occurs on fingers |
verruca vulgaris (common warts)
|
|
what is this? flesh colored, pedunculated or polyploid nodules, occurs on mucocutaneous membranes or interginous areas.
|
condylomata acuminata
|
|
what is this?
dome shaped papules with central umbilication. contagious and self-inoculable |
molluscum contagiosum
|
|
what is this?
gross: dry thickened plaques on flexural surfaces with scales. micro: acanthosis, orthokeratosis |
chronic eczema
|
|
what type of allergic reaction is eczema
|
IgE mediated, th2 dominated.
|
|
what is the most dangerous pediatric vascular malformation?
|
atriovenous malformation
|
|
what type of allergic reactions is urticaria
|
type I histamine mediated
|
|
what type of allergic reaction is allergic contact dermatitis
|
type 4 t cell mediated
|
|
what common drugs cause morbilliform drug reaction rash?
|
antibiotics (penicillins, sulfas)
antihypertensives nsaids anticonvulsants |
|
what is propionibacterium?
|
a bacteria that can cause acne vulgaris
|
|
in rosacea, what treatment must you avoid?
|
systemic steroids
|
|
what is pityrosporum malassezia?
|
it's a yeast that can cause seborrheic dermatitis
|