This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
This lesion developed on the chest of a 35-year-old man during treatment for a respiratory tract infection. What is the diagnosis? 
Select and explain. 
A. Acute urticaria, B. Drug-induced pemphigus, C. Erythema annulare, D. Fixed drug eruption
D: Fixed drug eruption
Answer: D: Fixed drug eruption 
Explanation: Answer D. Fixed drug eruptionFixed drug eruptions such as this one are common, immune-mediated, cutaneous lesions that appear as annular, edematous, reddish-brown macules or plaques. Residual hyperpigmentation is a hallmark.