Minocycline-induced immune thrombocytopenia presenting as Schamberg's disease.

Minocycline hydrochloride, a synthetic tetracycline, is a systemic antibiotic that has received much attention over the past several years. Currently, minocycline is considered the most widely prescribed oral antibiotic in the management of acne. Minocycline has been associated with autoimmune events, hepatitis, lupus-like syndromes, serum sickness, vasculitis, Sweet's syndrome, and hyperpigmentation.