Congratulations to the winner of our March quiz, Alireza Khatami, MD, Department of Public Health and Clinical Medicine, Division of Epidemiology and Public Health, Umea International School of Public Health, Umea, Sweden. The correct answer to our March challenge was localized darier disease. For a complete discussion of this case, see the Off-Center Fold section in the April Archives (Bowe W, Nguyen V, Elenitsas R, Katz K. Keratotic papules on the right side of the neck and back. Arch Dermatol. 2007;143:536-540).