THREE CHILDREN with the same skin disorder are pictured. A 3-year-old boy presented with a 5-day history of an enlarging, intensely pruritic lesion of the left foot (Figure 1). Fourteen days before, he had returned from a 4-week trip to Florida where he visited his grandmother, who owns 16 cats. He walked barefooted both in his grandmother's home and on a nearby beach. An 11-year-old girl who had recently returned from a trip to North Carolina had a similar pruritic lesion on her left foot (Figure 2).