nikeliherkkyyttä

Nikeliherkkyys, also known as nickel allergy, is a common type of allergic contact dermatitis. It occurs when a person's immune system overreacts to nickel, a metal frequently found in jewelry, coins, zippers, and other metal objects. The reaction is not immediate; it typically develops after repeated exposure to nickel.

The symptoms of nikeliherkkyys usually appear on the skin area that came into direct contact with the nickel. These symptoms can include redness, itching, swelling, and the formation of blisters or small bumps. In more severe cases, the rash can spread beyond the initial contact site. The severity of the reaction can vary greatly among individuals, ranging from mild discomfort to a more significant and persistent rash.

Diagnosis of nikeliherkkyys is usually made through a physical examination of the skin and a patient's history of exposure to potential nickel sources. Patch testing, a diagnostic procedure where small amounts of nickel are applied to the skin under a patch, can confirm the allergy.

There is no cure for nikeliherkkyys, but the condition can be managed by avoiding contact with nickel. This often involves choosing jewelry and clothing made from nickel-free materials or alternatives like stainless steel, titanium, or plastics. For individuals with severe allergies, even small amounts of nickel can trigger a reaction, making careful avoidance essential for preventing symptoms.