A 26-year-old man presented to the ED with a 3-day history of dry cough , nonpruritic rash , and fever . Physical examination Upon auscultation, crackles were prominent on the left side of the chest. Macular and targetoid rash was observed on the hands and feet , including the palms and soles.

Medical history Unremarkable Further aggravation of symptoms Development of severe mucositis over the next three days of presentation Body parts affected by mucositis: C onjunctivae , lips , buccal mucosa , and urethral meatus   What is the possible diagnosis of the patient? Herpes simplex virus-1 gingivostomatitis Mycoplasma pneumonia-associated mucositis Stevens-Johnson syndrome Mucocutaneous Epstein–Barr virus Behçet’s disease *This Case Challenge is from the Docplexus Editorial Team for educative purposes only. (Answer is posted in the comment section below!)