Allergy to metal
An allergic reaction to metal is an overreaction of the body's immune system to a substance (allergen) in a metal. An allergic reaction to metal can cause intense swelling, pain, and itching.
Nickel is the most common metal allergen. Jewelry that does not trigger an allergic reaction is made from:
- Stainless steel (grade-300).
- 14- or 18-karat gold.
- Dense, nonporous plastic, such as monofilament nylon, acrylic, or Lucite.
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