Rare Diseases

Make the Diagnosis

Make The Diagnosis - September 2018

A 75-year-old man presented with asymptomatic annular plaques on both arms, thighs, abdomen, and buttocks, present for several months.

MD IQ

Case Reports

Squamoid Eccrine Ductal Carcinoma

Squamoid eccrine ductal carcinoma (SEDC) is an extremely rare cutaneous tumor of unknown etiology. We report the case of a 77-year-old man with a...

Case Reports

Discoid Lupus Erythematosus Following Herpes Zoster

The isomorphic response is the appearance of new lesions from a preexisting skin condition at a site of trauma. Discoid lupus erythematosus (DLE)...

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