Rash on Hands and Arms: What to Know

A rash on the hands and arms may come from irritation, allergy, inflammation, infection, heat, or a medicine reaction. Its appearance, itch, pain, spread, and timing help a clinician narrow the possibilities.

Dry, cracked, burning skin after frequent washing or cleaning can fit Contact Dermatitis. Itchy, inflamed patches that recur may fit Atopic Dermatitis. A ring-shaped, spreading patch can be consistent with Ringworm, while intense night-time itch or affected household contacts raises Scabies as a possibility. Thick, scaly areas may occur with Psoriasis. Heat and trapped sweat can trigger Heat Rash, and a widespread eruption after a new medicine needs assessment for Drug Rash.

Pause newly introduced soaps, detergents, gloves, fragrances, and skin products if you can do so safely. Wash gently with lukewarm water, pat dry, and use a plain fragrance-free moisturiser. Keep nails short and avoid scratching; cool compresses can soothe itch. Photograph the rash and note exposures, medicines, foods, travel, and whether anyone close to you is itchy. Avoid sharing towels until an infectious cause has been excluded.

Get urgent help for trouble breathing, swelling of the lips or tongue, faintness, blistering, skin peeling, severe pain, or rash involving the eyes or mouth. Seek prompt medical review if fever, pus, warmth, rapidly spreading redness, or red streaking accompanies the rash. Arrange an appointment if it persists, repeatedly returns, interferes with sleep, or begins after a prescription or over-the-counter medicine.

Could this be contact irritation, an allergy, eczema, psoriasis, a fungal infection, or scabies? Which products should I stop, and what treatment is suitable for the exact area? Do I need testing, and how should I prevent spread to other people?