Dermatology Flashcards
acanthosis nigricans
darkening of the skin caused by elevated glucose
treatment of acanthosis nigricans
glucose control and weight loss
Etiology of acne vulgaris
-sebum
-bacteria
-inflammation
categories of acne
-mild: <20 comedones, <15 pustules
-moderate: 20-100 comedones, 15-50 pustules
-severe: >100 comedones, >50 pustules, any cysts/nodules
treatment of mild acne
-BPO
-tretinoin
-topical antibiotics
treatment of moderate acne
-BPO
-tretinoin
-doxycycline
treatment of severe acne
-same as moderate
-can try accutane
actinic keratosis
precancerous lesion on sun exposed area of skin
s/s of AK
flat, scaly, rough lesions
treatment of AK
cryo
5fu
etiology of androgenic alopecia
genetic
s/s of androgenic alopecia
-gradual thinning
diagnosis of androgenic alopecia
-clinical
-biopsy
etiology of alopecia areata
autoimmune
treatment of androgenic alopecia
topical rogaine
men: finasteride
s/s of alopecia areata
-patchy hair loss
-black dots (exclamation hairs)
diagnosis of alopecia areata
bx
treatment of alopecia areata
midoxinil + topical steroid
s/s of basal cell carcinoma
pink/red pearly nodule with visible vessels
ulcerating BCC
like nodular but with central ulcer
sclerosing BCC
plaque, scar like lesion
diagnosis of BCC
biopsy
treatment of BCC
mohs
etiology of bullous pemphigoid
autoimmune disorder
s/s of bullous pemphigoid
-large, tense, firm topped lesions
-painful erosions after rupture
-negative nikolsky
diagnosis of bullous pemphigoid
perilesional biopsy
treatment of bullous pemphigoid
prednisone
cellulitis vs erysipelas
-cellulitis doesn’t have distinct borders and erysipelas does
Treatment of Cellulitis & Erysipelas
-MRSA risk: bactrim, clinda, or doxy
-no MRSA risk: keflex
-bite: augmentin
etiology of condyloma
HPV 6 and 11
s/s of condyloma
-flat topped papules
-cauliflower lesions
-flesh colored
diagnosis of condyloma
-typically clinical
-pap smear
treatment of condyloma
-imiquimod
-cryo
-surgical removal
-may resolve on own
etiology of eczema
IgE mediated
s/s of eczema
-red, scaly, plaques or papules
-itchy
diagnosis of eczema
clinical
treatment of eczema
-low strength steroid
-moisturizer
-antihistamines
etiology of seb derm
yeast
s/s of seb derm
-greasy, yellow scales
-erythematous base
diagnosis of seb derm
clinical
treatment of seb derm
-ketoconazole shampoo
-topical steroids
s/s of fixed drug eruption
-erythematous plaque or patch that recurs in the same site if reexposure occurs
treatment of drug eruption
-d/c drug
-topical steroid
-topical abx if eroded
s/s of dyshydrotic eczema
-tapioca like vesicles
-on fingers
treatment of dyshydrotic eczema
topical steroids
-Betamethasone dipropionate, augmented
-Clobetasol
etiology of erythema multiforme
infections and drugs
s/s of erythema multiforme
-erythematous, papular lesion
-tense, firm topped
-contain serous or hemorrhagic fluid
-positive nikolsky sign
MCC: HSV
tx of EM
topical steroids
recurrent: daily
prophylactic antiviral