This article has no abstract; the first 100 words appear below.

To the Editor: A 30-year-old man presented with burning, severe swelling, and blistering of his left hand. Two days earlier he had prepared a large quantity of margaritas, which entailed squeezing 5 dozen limes, after which he had sunbathed for the remainder of the afternoon. He had no history of any skin disorder. Physical examination revealed serosanguineous vesicles and bullae on an edematous and erythematous base on the backs of both hands, sparing the palms (Figure 1). Patches of linear erythematous vesicles were also noted extending up the right forearm and on the back of the left foot. A diagnosis . . .