Congratulations to the winner of our December quiz, John Starling III, MD, Department of Dermatology, University of Michigan, Ann Arbor.
The correct answer to our December challenge was multicentric reticulohistiocytosis. For a complete discussion of this case, see the Off-Center Fold section in the January Archives (Tallon B, Rademaker M. Asymptomatic papules over the proximal nail fold in a child. Arch Dermatol. 2008;144:105-110).