Case 12-2021: A 78-Year-Old Man with a Rash on the Scalp and Face

Yoon MK, Kelly HR, Freitag SK, Marneros AG, Barshak MB, Brackett DG. Case 12-2021: A 78-Year-Old Man with a Rash on the Scalp and Face. N Engl J Med 2021;384(16):1553-1562.