Congratulations to the winner of our May quiz, Dr Sarika Holmukhe, Seth Gordhandas Sunderdas Medical College and King Edward Memorial Hospital, Mumbai, India. The correct answer to our May challenge was contact vaccinia. For a complete discussion of this case, see the Off-Center Fold section in the June Archives (Walters MC, Satter EK. Painful vesicles on the wrist. Arch Dermatol. 2010;146:667-672).