Congratulations to the winner of our December quiz, Edidiong Kaminska, MD, Section of Dermatology, University of Chicago, Chicago, Illinois. The correct answer to our December challenge was erythema ab igne. For a complete discussion of this case, see the “Off-Center Fold ” section in the January Archives (Dela Rosa K, Satter EK. Erythematous patches on the chest. Arch Dermatol. 2012;148:113-118).