The mother of a 4-year-old boy, whose family recently emigrated from Haiti, brings him to the pediatric mobile clinic for evaluation of a rash that had begun 11 days earlier as an eruption of vesicular, pruritic papules on the bilateral lower extremities and had spread to the buttocks and medial thighs with sparing of the face. The skin eruption was followed by desquamation of the skin on his palms and soles.
