Thursday, June 27, 2013
A patient with Staph endocarditis (not yet speciated) who has been receiving the antibiotic shown above for 3 days develops the rash shown below. Mucosal surfaces are spared. A dermatologist takes a biopsy and the pathologist notes linear IgA deposition at the dermal-epidermal junction of the basement membrane zone.
Challenge: Discontinuation of the drug leads to resolution of the rash - what drug is it?
First image is in the public domain. Second image shown under Fair Use.