Round Red Patch on a Man's Neck

March 7, 2014

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?

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.

Which of these drugs do you suspect might have caused the lesion?