Contact dermatitis
Informed by recognized medical guidance
Overview
Contact dermatitis is a red, itchy rash that appears on your skin when it touches something that irritates it or causes an allergic reaction. It is not contagious.
Key facts
- Contact dermatitis is not an infection and cannot be passed from person to person.
- It usually clears up on its own once the irritating substance is removed.
- There are two main types: irritant contact dermatitis (from chemicals or friction) and allergic contact dermatitis (from an allergy).
Yes, contact dermatitis is very common. Most people will experience it at some point in their lives.
Anyone can get contact dermatitis, but people with very sensitive skin, those who work with chemicals, frequent hand-washers, and people with a history of allergies or eczema may be more likely to develop it.
Symptoms
- Sudden trouble breathing or swallowing
- Swelling of the face, lips, tongue, or throat
- Severe blistering or peeling of large areas of skin
- ⚠Rash that spreads rapidly or becomes very painful
- ⚠Signs of infection: pus, increased redness, warmth, or fever
- ⚠Rash that does not improve after a few days of avoiding the trigger
Common symptoms
- Redness on the skin in the area of contact
- Itching, sometimes intense
- Burning or stinging sensation
- Small blisters that may ooze or crust
- Dry, cracked, or scaly skin
Symptoms in children
- Angry red rash that may appear quickly after touching an irritant
- Fussiness and scratching at the affected area
- Blistering and oozing, especially on the face, hands, or diaper area
Symptoms in older adults
- Dry, fragile skin that may take longer to heal
- Increased risk of infection because the skin barrier is weaker
- Itching that may be severe but less obvious redness
Causes
Main causes
- Direct contact with an irritant: such as soaps, detergents, solvents, acids, or even water when hands are wet too often
- Allergic reaction to a substance: like nickel in jewelry, fragrances, preservatives in creams, latex, or plants like poison ivy
- Repeated friction or rubbing against the skin
Risk factors
- Working in jobs that involve wet work or chemicals (e.g., healthcare, cleaning, hairdressing)
- Having other skin conditions like eczema
- Family history of allergies or contact dermatitis
- Frequent hand washing or use of harsh sanitizers
When to see a doctor
See a doctor urgently if:
- If the rash is very severe, covers a large area, or is on your face or genitals
- If you have signs of infection like spreading redness, pus, or fever
- If you have difficulty breathing or swallowing (call emergency immediately)
Book a routine appointment if:
- If the rash does not get better after avoiding the trigger for a week or two
- If the itching is very uncomfortable and keeps you from sleeping
- If you are not sure what caused the rash and want help identifying it
Diagnosis
Your doctor will ask about your symptoms, what you may have been in contact with, and will examine your skin. Usually, they can diagnose contact dermatitis based on the rash and your history.
Tests that may be done
- Sometimes a patch test: small amounts of common allergens are placed on your back to see if your skin reacts
- In rare cases, a skin biopsy (taking a tiny piece of skin for lab testing)
What to expect at your appointment
A doctor or nurse will gently look at your rash and ask about your daily activities, work, and products you use. For patch testing, you will need to come back in 2–4 days to have the patches removed and checked.
Treatment
Treatment for contact dermatitis focuses on removing the cause, soothing the symptoms, and allowing the skin to heal. Most cases can be managed at home, but sometimes medical help is needed.
Self-care at home
- Wash the area gently with lukewarm water and mild soap to remove the irritant
- Apply a plain, fragrance-free moisturiser to soothe and protect the skin
- Use cool compresses or take an oatmeal bath to relieve itching
- Avoid scratching – keep nails short and consider wearing cotton gloves at night
Medical treatments
A doctor may recommend a topical corticosteroid cream or ointment to reduce inflammation and itching. For severe cases, they might prescribe oral corticosteroids or other anti-inflammatory medicines. Always use treatments exactly as directed by your healthcare provider. Do not use over-the-counter steroid creams on your face or on broken skin without medical advice.
When is surgery considered?
Surgery is not used for contact dermatitis.
Living with this condition
Identify and avoid the substances that trigger your rash. This may mean reading product labels, wearing gloves, or changing your skincare routine. With time, you can learn to manage your triggers and keep flare-ups to a minimum.
Lifestyle tips
- Keep your skin well-moisturised with unscented creams to strengthen the skin barrier
- Wear protective gloves when using cleaning products or handling chemicals
- Use fragrance-free soaps, detergents, and personal care products
- Pat your skin dry after washing, and apply moisturiser while still slightly damp
Diet and exercise
A healthy diet rich in fruits, vegetables, and omega-3 fatty acids may help support overall skin health. No specific diet is proven to prevent or treat contact dermatitis. Exercise is fine – just shower soon after and moisturise to avoid sweat irritation.
Mental health and emotional wellbeing
Contact dermatitis can be frustrating and exhausting, especially if the itching keeps you awake or the rash affects your appearance. It is normal to feel upset or self-conscious. If you are struggling with anxiety or low mood because of your skin, talk to your doctor or a mental health professional.
Prevention
Contact dermatitis can often be prevented by avoiding the substances that cause your rash. If you know your triggers, you can take steps like wearing gloves, using barrier creams, and choosing gentle, fragrance-free products.
Complications
If left untreated
- Skin infection (cellulitis) from scratching and bacteria entering the skin
- Permanent skin changes like thickening or darkening of the affected area
- Chronic dermatitis that lasts a long time if the irritant is not avoided
Long-term outlook
The outlook for contact dermatitis is very good once the cause is identified and avoided. Most rashes heal within a few days to weeks. With proper self-care and medical support when needed, you can keep your skin healthy and comfortable.
Find support
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 9, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.