Q43
Single choice
A 9-month-old male infant is brought to your office for evaluation of new skin lesions. The mother tells you that she recently had to return to work, and the child is now in day care. He has since developed new erythematous facial plaques. She also reports that the child has been irritable with chronic diarrhea. On examination, the child has dry scaly plaques symmetrically distributed in the perianal and perioral areas.
Which deficiency does this child likely have?
