Congratulations to the winner of our May quiz, Tahir Anis, MCPS, Institute of Skin Diseases, Karachi, Pakistan. The correct answer to our May challenge was necrolytic migratory erythema and glucagonoma syndrome. For a complete discussion of this case, see the Off-Center Fold section in the June Archives (Nussbaum KC, Barlow KC, Berk MA, Robinson N, Levit F. Erosive dermatitis and progressive neurological symptoms. Arch Dermatol. 2008;144:795-800).