A 7-year-old boy was brought to his family physician for evaluation of a mildly pruritic spreading rash. Ten days earlier, the skin eruption had appeared, and he was given a diagnosis of streptococcal pharyngitis, which was confirmed by a throat swab and positive antistreptolysin O titer. Physical examination revealed multiple erythematous, scaly papules and plaques on the patient’s trunk, arms, and legs. His palms and soles were spared.