Teen Boy with a Progressive Pruritic Rash

VIDEO: The lesions appear oval with trailing edge scale. Note the the pattern and distribution in the video interview; what's your diagnosis?

A 13 y/o boy is seen for a pruritic rash that been spreading x1 week; lesions are widespread over chest and back w axilla involvement. Recent hx of viral illness now resolved. PMH: noncontributory.


What is your diagnosis?