Nickel contact dermatitis in children.

Nickel is the most commonly detected cutaneous allergen on patch testing in the United States for children. The ubiquitous nature of nickel as a hardening agent in metal products makes avoidance difficult. Allergy in childhood can be hard to recognize, especially when a strong idiopathic response is noted. Although the standard belt buckle and jewelry trigger still occur, newer sources include technology equipment, such as cases for mobile phones, computers, and tablet devices This contribution reviews the various clinical appearances of nickel contact allergy in childhood, as well as strategies for treatment and avoidance.