Quick read
Key points
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Contact dermatitis is inflammation of the skin caused by direct contact with an irritating substance (irritant contact dermatitis) or an allergic reaction to something touching the skin (allergic contact dermatitis). Common triggers include soaps, detergents, certain metals like nickel, cosmetics, and some plants.
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Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
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The rash is severe, widespread, or not improving with avoidance of suspected triggers
01 · Know
What is Contact Dermatitis?
Contact dermatitis is inflammation of the skin caused by direct contact with an irritating substance (irritant contact dermatitis) or an allergic reaction to something touching the skin (allergic contact dermatitis). Common triggers include soaps, detergents, certain metals like nickel, cosmetics, and some plants.
It typically causes redness, itching, and sometimes blistering or dry, cracked skin at the site of contact. Identifying and avoiding the specific trigger, alongside gentle skincare, usually resolves it well.
02 · Understand
Clinical context
Identifying the trigger is central to managing this
Contact dermatitis often improves quickly once the specific irritant or allergen is identified and avoided — patch testing can help pinpoint the trigger if it isn't obvious.
03 · Act
When to See a Doctor
- 1The rash is severe, widespread, or not improving with avoidance of suspected triggers
- 2You're unable to identify what's causing the reaction
- 3The skin shows signs of infection, such as increasing redness, warmth, or pus
- 4You'd like to discuss patch testing to identify specific allergens
04 · Prevent & manage
Practical steps
Avoid the Suspected Trigger Completely, Not Just Reduce Exposure
Even small or occasional contact with a trigger can maintain contact dermatitis — complete avoidance, rather than just reducing exposure, tends to bring the best results.
- 1Identify and avoid the suspected trigger.This might involve changing products, wearing protective gloves, or avoiding certain metals.
- 2Wash the area gently after contact with a suspected irritant.This can help limit the reaction if contact was accidental.
- 3Moisturize regularly with a fragrance-free emollient.This supports the skin's barrier function and eases dryness.
- 4Use an over-the-counter hydrocortisone cream if needed.This can help calm mild inflammation — check with a pharmacist for appropriate use.
- 5See a doctor if the trigger isn't clear.Patch testing can help identify specific allergens contributing to the reaction.
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
Contact dermatitis usually improves well once the specific trigger is identified and avoided, alongside gentle skincare.
Patch testing can help pinpoint the exact cause when it isn't obvious from your history.