Derm Flashcards
Tx non-purulent non-MRSA cellulitis (3)
clindamycin, dicloxacillin, cephalexin
Tx erysipelas (2)
PCN or amoxicillin
Pathogen erysipelas
GAS
Pathogen Folliculitis
Staph > GAS
Tx folliculitis (2)
TOP Mupirocin, chlorhexidine
Pathogen furuncle/abscess
Staph
Indications for abx in abscess mgmt (3)
febrile, cellulitis, immunocompromised
Tx impetigo (limited) (2)
TOP mupirocin or bacitracin
Tx impetigo (generalized) (2)
cephalosporin or PCNase-resistance PCN
Which diagnosis? ulcers with gray-black eschar and erythematous halo on legs/feet
Ecthyma gangrenosum
Pathogen ecthyma gangrenosum
Pseudomonas
Tx ecthyma gangrenosum
Pip-Taz + aminoglycoside
Dx dermatophyte infection
KOH prep
Tx tinea (limited) (2)
TOP clotrimazole or terbinafine
Tx tinea (generalized) (2)
PO ketoconazole or terbinafine
Which diagnosis? non-pruritic patches/papules/plaques on trunk and proximal upper extremities caused with spores and hyphae on microscopy
Tinea versicolor (malassezia furfur)
Tx tinea versicolor (2)
TOP selenium sulfide or PO Ketoconazole (x1)
Tx candida (2)
TOP clotrimazole or nystatin
Tx onychomycosis (3)
PO terbinafine, itraconazole, or fluconazole
Which nail finding/pathology? proximal half white/distal half pigmented
Lindsay nail/CKD
Which nail finding/pathology? longitudinal brown/black pigment
Melanonychia/Melanoma
Which nail finding/pathology? thin nails that have lost convexity
Koilonychia/Iron deficiency
Which nail finding/pathology? Nail-fold telangiectasias
Rheumatologic disease
Tx scabies (2)
Permethrin, ivermectin
Which diagnosis? maculopapular lesions grouped in a straight line
bed bugs
Tx bed bugs
Heating, antihistamines
Tx pediculosis/lice
Permethrin
Which diagnosis? circular erythematous plaques with darker central circle, involving palms/soles/extremities +/- oral mucosal involvement
Erythema multiforme
Pathogens associated with erythema multiforme
HSV, mycoplasma
Which diagnosis? 2-4cm oval plaque with scale inside the border; related to HHV6 or HHV7
Pityriasis Rosacea
Tx Pityriasis Rosacea
Supportive
Tx Erythema multiforme
Supportive
Which diagnosis? facial rash involving nasolabial folds
Acne Rosacea
Tx acne rosacea (3)
TOP metronidazole, benzoyl peroxide, tretinoin
Which diagnosis? firm dermal nodule that may be pigmented, most commonly on the legs of women
Dermatofibroma
Which diagnosis? non-tender lump on chest/neck/face that may become painful if it becomes infected
Dermal inclusion cyst
Which diagnosis? hereditary or acquired blistering disease due to excess porphyrins
Porphyria cutanea tarda
Dx Porphyria cutanea tarda
Urine uroporphyrin level
Tx porphyria cutanea tarda (3)
phlebotomy, anti-malaria, EPO (if CKD)
Which diagnosis? Deep tender palpable erythematous nodules on shins
Erythema nodosum
Tx erythema nodosum
NSAIDs