Overview
Contact dermatitis is your skin’s reaction to something in your environment that causes an itchy rash. “Dermatitis” is the medical term for skin irritation or swelling (inflammation). You get contact dermatitis by coming into contact with a substance, organism, object or chemical that’s irritating to your skin.
What are the types of contact dermatitis?
There are two types of contact dermatitis:
- Allergic contact dermatitis: Your body has an allergic reaction to a substance (allergen) that it doesn’t like. Common allergens include jewelry metals (like nickel), cosmetic products, fragrances and preservatives. It can take several days after exposure for an itchy rash to develop.
- Irritant contact dermatitis: This painful rash tends to come on quickly in response to an irritating substance. Common irritants include detergents, soap, cleaners and acid. Irritant contact dermatitis occurs more often than allergic contact dermatitis.
Who does contact dermatitis affect?
Contact dermatitis can affect anyone at any age, from a baby to an adult. Skin reactions can occur after a single exposure or after repeated exposures over time.
People who work in certain professions have a higher risk of developing contact dermatitis if they repeatedly encounter irritating chemicals or allergens. Professions at a high risk of developing contact dermatitis include:
- Construction workers.
- Florists.
- Food handlers.
- Hairstylists.
- Healthcare providers.
- Janitors and plumbers.
- Mechanics.
- Artists.
How common is contact dermatitis?
Contact dermatitis is common. Irritants and potential allergens surround humans. You might experience contact dermatitis more often if you have sensitive skin or chronic skin conditions.
How does contact dermatitis affect my body?
Contact dermatitis causes a rash to form on your skin. This rash can form anywhere on your body and is usually a patch of skin covered in bumps that are red, itchy and sometimes painful. The rash can last for a few days to a couple of weeks. It generally goes away quickly if you identify what caused your reaction and stay away if you can avoid that irritant or allergen.
Symptoms
When to see a doctor
Complications
- High blood pressure.
- Diabetes.
- Heart failure.
- Some types of heart valve disease.
Prevention
- Control high blood pressure, high cholesterol and diabetes.
- Don't smoke or use tobacco.
- Eat a diet that's low in salt and saturated fat.
- Exercise at least 30 minutes a day on most days of the week unless your health care team says not to.
- Get good sleep. Adults should aim for 7 to 9 hours daily.
- Maintain a healthy weight.
- Reduce and manage stress.
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