Nickel Can Cause Contact Dermatitis

The most common of all metal allergens is nickel, which is found in costume jewelry, clothing ornamentation, such as zippers, buttons and snaps, and virtually all common metal objects. Approximately 16 percent of all individuals who are patch tested for allergies turn out to be allergic to nickel. Because sweat allows the metal ions to be better absorbed into the skin, areas on the body where nickel is present and where sweating may occur can see an increase in the severity of the dermatitis.
The most common location of nickel dermatitis is on the earlobes from earrings containing the metal. This reaction may start with the needle used to pierce the ears and continue as individuals begin to change their earrings daily. Dermatologists suggest that individuals with an allergy to nickel wear only nickel-free or plastic earrings.
Trace amounts of metal are found in food and people with sensitivity to metal can experience dermatitis. In particular, beans, lettuce and whole-grain foods are high in nickel, but most people do not ingest enough of them to develop a serious rash.
"While nickel dermatitis is associated most often with costume jewelry or watchbands, which have a high concentration of nickel, it can occur with finer jewelry which is usually worn for prolonged periods, for example a wedding ring," said Dr. Fowler. "If sentimental reasons prevent you from not wearing an item on a daily basis, the best way to prevent the reaction is to have it plated in a non-allergic metal, such as platinum."