# Rashes and skin allergy

> Unexplained rashes, hives and suspected skin allergies, including contact allergy.

Source: https://www.skinhealth.clinic/conditions/rashes/
Written and medically reviewed by Dr Ting Seng Tang, Consultant Dermatologist (GMC 7020502). Last reviewed 2026-10.

Rashes have many causes, including eczema, contact allergy, infections, reactions to medicines and conditions such as urticaria (hives). Some are short-lived; others recur and need a clear diagnosis.

Allergic contact dermatitis is a reaction to something touching the skin, such as fragrances, preservatives, hair dye, metals or rubber. Identifying the cause can make a lasting difference.

## How We Can Help

- Diagnosis of persistent or recurrent rashes.
- Assessment for contact allergy and advice on patch testing where needed.
- A treatment plan for chronic hives and other long-standing rashes.
- A remote Rash Review with photos for quick advice.

## When to get urgent help

Seek emergency help (call 999) for swelling of the lips, tongue or throat, difficulty breathing, or a rash with feeling very unwell. Get urgent medical advice for a rash that does not fade when a glass is pressed on it, or for widespread blistering or peeling skin.

## Book

See https://www.skinhealth.clinic/services/ for online (£150), face-to-face (£250 new, £180 follow-up) and Mole Check / Rash Review (£75) appointments.

_General information only, not a substitute for individual medical advice. Provided by SkinHealth.Clinic (Dr Ting Seng Tang, GMC 7020502)._