A 27 year old sexually active male develops a vesiculobullous lesion on the glans soon after taking tablet paracetamol for fever. The lesion healed with hyperpigmentation. The most likely diagnosis is –: (A) Behcet's syndrome, (B) Herpes genitalis, (C) Fixed drug eruption, (D) Pemphigus vulgaris
Answer is C. Presentation with a solitary lesion in the genital skin that heals with hyperpigmentation. Soon after ingestion of paracetamol, one of the most commonly implicated agents for FDE, suggests a diagnosis of Fixed Drug Eruption (FDE)