A 9-year-old girl is brought to the physician by her mother for a 1-month history of skin changes to the right forehead and periorbital region. She has acute lymphoblastic leukemia in remission and received her last dose of chemotherapy 4 months ago. Which of the following is the most likely explanation for this patient’s findings?

A) Bacterium
B) DNA virus
C) Stevens-Johnson syndrome
D) RNA virus
E) Toxic epidermal necrolysis

