Rash Under Jewellery, Watches or Fasteners? Suspect Nickel
An itchy rash exactly where metal touches your skin is the classic sign of nickel allergy. Here's how to confirm it and reduce contact.
The tell-tale pattern
An itchy, red, sometimes blistered rash that appears exactly where metal sits, under a necklace clasp, a watch back, earrings, a jeans button or a bra fastening, is the classic sign of nickel allergy, the most common metal allergy.
How to confirm it
- The shape gives it away: a rash patterned to the metal contact area.
- It recurs each time you wear that item, and settles when you remove it.
- Cheaper jewellery and piercings are common triggers.
How to reduce contact
- Choose nickel-free jewellery, or surgical stainless steel, titanium or solid gold.
- Cover studs and watch backs with a barrier (clear nail varnish on a jeans button is a classic fix).
- Treat the skin like contact dermatitis: gentle, fragrance-free moisturiser and no scratching.
When to see a doctor
If you are unsure metal is the cause, or the rash is widespread or stubborn, a dermatologist can confirm nickel allergy with patch testing.
Reading a label by eye, or using a free ingredient-checker, will tell you what is in a product. What it will not do is check it against the specific ingredients you react to.
To close that gap, a personal-list app like ClearaScan lets you save the ingredients you react to once and scan any product to flag only your triggers. It also keeps a Reaction Journal for flare-ups, a shared Care Circle so family or carers can scan for you, and a Trusted Products list for items you have cleared, and it is currently in early access. (Disclosure: our editor co-founded ClearaScan, and we are not paid to mention the others.)