Congratulations to the winner of our April quiz, Trilokraj Tejasvi, MD, Department of Dermatology, University of Michigan, Ann Arbor. The correct answer to our April challenge was bullous mastocytosis. For a complete discussion of this case, see the Off-Center Fold section in the May Archives (Chwalek J, Cooper J, Goldner R, Kao G. Acute generalized bullous eruption in a 2-year-old boy. Arch Dermatol. 2008;144:673-678).