Dermatology Flashcards
Infection linked to toxic epidermal necrolysis
Mycoplasma pneumonia
(Drugs like sulfonamides, NSAIDs, anticonvulsants, and allopurinol more commonly cause).
Most common organism for erysipelas?
Non-purulent cellulitis?
Purulent cellulitis?
Erysepilas: Strep pyogenes
Non-purulent cellulitis: Strep pyogenes (but also Staph aureus)
Purulent cellulitis: Staph aureus
In addition to generally immunocompromised people, who else does Vibrio vulnificus lead to severe disseminated disease in?
Liver disease
Most common organism for furuncles (skin abscesses)?
Staph aureus
Tinea versicolor organism
Malassezia furfur (spaghetti and meatballs)
Organism for tinea corporis/ pedis/ cruris/ capitis?
Dermatophytes like Tricophyton rubrum
Cause of cutaneous larva migrans?
Mode of transmission?
Treatment?
Ancylosta hookworm
Larvae from dog/cat contaminate sand and enters via feet
Treat with antihelminths (e.g. ivermectin)
Organism for seborrheic dermatitis
Malassezia
Other than DM, what can cause acanthosis migricans?
Cancer (especially GI/GU)
Initial tests for erythema nodosum
CXR and PPD (TB, coccidioidomycosis, sarcoidosis)
Only do colonoscopy if GI symptoms, for IBD
Skin cancer with keratin pearls
SCC
Skin cancer with spindle cells
BCC
Skin cancer in an immunosuppressed patient
SCC (or melanoma)
Skin cancer with a chronic scar
Marjolin’s ulcer (unusually aggressive SCC, metastasizes early)
Skin cancer on lower lip
SCC
