Five days after a 41-year-old man started taking a new medication, this superficial but painful lesion appeared on his neck. It slowly resolved after the drug was stopped and a topical corticosteroid was applied twice daily.

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Skin Diseases

Five days after starting a new medication, this lesion appeared on a man’s neck. It slowly resolved after the drug was stopped. Which of these drugs do you suspect might have caused the lesion?

Round Red Patch on a Man's Neck