Flashcards in Dermatology Deck (19)
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1
macule vs papule vs patch vs plaque
Macule: flat, diff color 1cm
Plaque: elevated solid, >5mm
2
anaphylaxis, drug rxn: type of rxn, mechanism
Type 1, Antigen and IgE crosslink
3
Autoimmune hemolytic anemia, rheumatic fever: type rxn, mech
Type II, IgM, IgG bind and complement phagocytosis
4
SLE, polyarteritis nodosa: type, mech
III, immune complex activate complement
5
TB test, contact dermatitis: type, mech
IV, delayed, sensitized t cel
6
Pityrosporom ovale: type of organism, what causes
yeast, seb derm
7
Drug erruptions: time line and typical appearance
7-14 d after exposure
widespread, symmetrical, pruritic
8
SJS vs TEN: criteria and bx
SJS: 10% BSA, degen basal layer
TEN: >30%, full thickness eosinphilic epidermal necrosis
9
Workup for erythema nodosum
ASO titer, PPD, CXR (sarcoidosis), small bowel (IBD)
10
Bullous pemphigoid vs pemphigus vulgaris: anatomy affected, type of blister, mucosal involvement, nikolvsky sign
BP: basement membrane, anti-BP antigen, firm stable blisters, neg Nikolsk
PV: intraepidermal, anti-desmoglein, erosions, + nicolsky, mucosal involvement common
11
Appears as red vesicles at all stages, palms and soles spared
chicken pox
12
Small pink papules on the trunk, fever, GI: causative agent and tx
Salmonella typhi
fluoroquinalones and 3rd gen cephalosporins
13
Tx of nec fasc
surgical emergency
Abx: penicillin G or clinda for strep
metronidazole or 3rd gen cephalosporin for anaerobic
14
Tx and causative organism: tinea versicolor
malassezia furfur
Ketoconazole or selenium sulfide
15
Treatment of scabies
overnight with 5% permethrin from neck down, oral ivermectin
16
Intensely pruritic violaceous, flat-topped polygonal papules
lichen planus
17
HHV 6 or 7 infection
pityriassi rosea: "cigarrette paper", herald patch
18
Bacillary angiomatosis: mimic and tx
mimic of kaposi sarcoma, tx with erythromycin
19
