How can I tell if a metal allergy is from the jewelry or from something else?

ZKZ Editorial TeamMain answer · Product & gemmology desk

Irritation from soap, water and trapped moisture is more common than metal allergy, according to the NHS. A patch of rash exactly under the jewelry points at contact, but only a doctor can confirm the cause. This is general information, not medical advice.

What the sources say

Fact The NHS says contact dermatitis is a type of eczema triggered by contact with a substance, and that it is most commonly caused by irritants such as soaps and detergents, solvents or regular contact with water.

Fact The NHS says allergic contact dermatitis is less common and can be triggered by substances found in certain products, such as cosmetics, or by some metals, including nickel.

Fact The NHS says a GP may refer a person to a dermatologist for further tests if the substance cannot be identified or the symptoms are not responding to treatment.

Fact The NHS says the best way to prevent contact dermatitis is to avoid the allergen or irritant, and that gloves can protect the hands but should be taken off every now and again because sweating can make symptoms worse.

A simple way to narrow it down

1. Note the exact location of the rash and whether it matches the shape of the jewelry.
2. Think about soaps, hand wash, creams, gloves and cleaning products used around the same time.
3. Leave the jewelry off for a period, and note whether the skin improves.
4. Make one change at a time, so that you can tell which change had the effect.

It depends Trapped moisture and soap under a ring is a common irritant situation, and it can look like an allergy.

What to bring to an appointment

Our advice Take a list of the pieces you wear, the date the rash started, any new products and photographs of the skin. If the seller has given a metal specification, bring that too. This helps a doctor decide whether to arrange testing.

Uncertain We cannot tell you which cause applies to you. Ask a GP or dermatologist, who can arrange tests if needed.

Related reading: How do I tell whether a jewelry discount is genuine? · What Is the Best Metal for Jewelry? Silver, Gold, Platinum Compared

Sources

• NHS, contact dermatitis

Fact = stated by the cited source. Our advice = editorial recommendation. Uncertain / it depends = limits of what can be said in general.