A 26-year-old previously healthy man presented to the emergency department with a 3-day history of fever, dry cough, and nonpruritic rash. A physical examination was notable for crackles on the left side of the chest and a macular, targetoid rash on his hands and feet, including the palms and soles. Over the next 3 days, severe mucositis developed that involved the lips, buccal mucosa, conjunctivae, and urethral meatus. What is the diagnosis?
A) Herpes simplex virus-1 gingivostomatitis
B) Stevens–Johnson syndrome
C) Behçet’s disease
D) Mucocutaneous Epstein–Barr virus
E) Mycoplasma pneumoniae-associated mucositis
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