Comquest - Derm (20) Flashcards
tense fluid filled bullae = ?
flaccid fluid filled bullae = ?
tense = bullous pemphigoid flaccid = pemphigus vulgaris (anti-desmoglein 1,3; IgG)
shiny polygonal papules on flexor surfaces. assoc wih HepC, MG, PBS, UC
lichen planus
thick white polygonal papules, esp genital region
lichen sclerosis
Newborn rash that does not cover palms or soles. Sampling reveals eosinophilia.
erythema toxicum neonatorum
dx?
non-pigmented, erythematous, scaly. in sun exposed areas
next step?
actinic keratosis
next step os cryotherapy
dx?
firm, smooth, hyperkeratotic papule or plaque with central ulceration that may bleed with trauma and will not heal
SCCarcinoma
surgical excision of suspicious melanoma at what mm?
4mm
define dyshidrotic eczema
recurrent vesicular pruritic eruptions on palms, fingers, soles
8yo with acne. what drug is contraindicated in
doxycycline
prophylactic DoC for uncomplicated animal bites
amoxicillin-clavulanate (covers Bacteroides, Fuscobacteria, and Pasteurella) –> Gneg and anaerobes
- appropriate management for a CLEAN animal bite in a rabies-immunized animal, but human with unknown-vaccination history
- appropriate management for a soiled animal bite in a rabies-immunized animal, but human with unknown-vaccination history
clean - tetanus toxoid
dirty - tetanus toxoid and tetanus Ig
appropriate management for a soiled/thru-dermis animal bite in a rabies-immunized animal, and human with tetanus booster vaccination history of less than 5 years ago
tetanus toxoid only
eosinophilic infiltrate in the dermal-epidermal junction. positive for C3 or IgG in basement membrane in pregnant woman.
pemphigus gestationis
location of antibody deposition in salt split technique in blisters of bullous pemphigoid v. pemphigus gestationis
BP = roof PG = floor
organism that causes common wart
HPV
greasy, well circumscribed, sun area of skin
dx?
tx?
seborrheic keratosis; reassurance
newborn with flat, salmon-pink blanching, symmetric skin patch between eyebrowns or neck
nevus simplex
B9 skin lesion in groups of 1-2mm. MC ankles, feet, hands, fingers, extensor surfaces of extremities. center can be hyperpigmented or absent. healthy children and YA. no sx. KOH scrapings reveal no fungi. no scaling.
granuloma annulare
best sampling technique for non-melanoma (BCCa or SCCa) non-pigmented, raised skin lesions
shave biopsy
best sampling technique for melanoma
excisional biospy
best tx for confirmed BCCa
cryosurgery
