Contact Dermatitis: Types, Symptoms, Causes, and Treatment

Contact dermatitis happens when something touching your skin causes a rash. Knowing what triggered it is often the key to treating it.

At a Glance: Contact Dermatitis

  • Irritant contact dermatitis is the most common type. It comes from repeated exposure to a substance that damages the skin barrier, like harsh soaps, chemicals, or frequent handwashing.
  • Allergic contact dermatitis is an immune reaction to a specific allergen. Common triggers include nickel (the most common cause), fragrances, preservatives, latex, and plants like poison ivy, poison oak, and poison sumac.
  • There is no single test to confirm contact dermatitis. Healthcare providers rely on your medical history and a physical exam. They may use patch testing — placing small amounts of allergens on your skin — to identify a specific allergic trigger.
  • Treatment ranges from over-the-counter (OTC) to prescription options. Mild cases often respond to OTC treatments like hydrocortisone cream or oatmeal baths. More severe or unresponsive cases may need prescription topical steroids.
  • Scratching can lead to infection. A damaged skin barrier lets in bacteria. It is important to watch for signs of infection, like increased pain, oozing, or fever.
  • There is no cure except avoiding your triggers. Identifying and avoiding the allergen or irritant causing your reaction is the most effective way to prevent future flare-ups.

What is contact dermatitis? The simplest answer is contact dermatitis is a type of skin condition or reaction. It occurs when the skin encounters certain substances.

Contact dermatitis has two main causes:

  • Irritants – substances that cause skin irritation without an allergic reaction.
  • Allergens – substances that trigger an allergic reaction.

When an allergen or irritant touches your skin, it can damage the skin barrier. This can trigger inflammation of the skin. The reaction is often an itchy skin rash that can be painful. These symptoms may develop within minutes. But they can also take hours or even days to develop.

Contact dermatitis is very common skin condition. Anyone is at risk for developing contact dermatitis. An estimated 15% of people will experience contact dermatitis at some point in their lives.

Contact dermatitis is also the most common cause of work-related (occupational) skin conditions. Up to 95% of occupational skin conditions are from contact dermatitis.

Close-up of a person's face with red, irritated skin around the eyes and forehead, likely due to contact dermatitis. The individual is holding their forehead, emphasizing the patchy rash and rough texture of the skin.

Irritant contact dermatitis

Irritant contact dermatitis (or irritant dermatitis) is the most common form of contact dermatitis. It accounts for up to 80% of all cases of contact dermatitis.

Irritant contact dermatitis is normally caused by repeated exposure to an offending substance. This substance irritates the skin. Over time, that substance breaks down the skin barrier. This leads to more skin irritation and damaged skin cells.

People in certain occupations are at high risk for developing irritant contact dermatitis. These jobs may include healthcare, agriculture, construction, hairdresser, and mechanics. The professions often put people in direct contact with irritants. If a substance is especially harsh, a single exposure could cause a quick reaction.

Some of the most common irritants include:

  • Chemicals
  • Textiles
  • Insecticides
  • Harsh soaps
  • Bleach and detergents
  • Cosmetics and skincare products
  • Metals
  • Wet diapers or pads

Even something as simple as soap and water can cause irritant contact dermatitis. This happens when frequent hand washing dries out the hands. This can break down the skin barrier.

Man's hands on his knee showing the contact dermatitis rash on the back of his hands.

Allergic contact dermatitis

Allergic contact dermatitis is a contact allergy. It occurs when the skin makes contact with an allergen. This triggers an immune system response. It causes a skin reaction, such as an itchy rash. This can develop from repeat exposures to the allergen.

Common allergens include:

  • Plants such as poison ivy, poison oak and poison sumac. People encounter plants like poison ivy or poison oak when gardening, hiking, and doing outdoor activities. Just brushing across one these plants can trigger allergic contact dermatitis.
  • Cosmetics, hair dyes, and skincare products. Products used on the skin and in hair dye may have ingredients that are allergens. These can include dyes, metals, fragrances, preservatives, and natural rubber. Any could potentially cause allergic contact dermatitis.
  • Metals. Metals such as nickel, cobalt, chromium, and zinc are common triggers for allergic contact dermatitis. Nickel allergy is the most common cause of allergic contact dermatitis. These metals are found in jewelry and body piercings. They may also be found in tools, cosmetics, and many other household items.
  • Fragrances. Fragrances used for perfumes and to provide scents to soaps, lotions and cosmetics can affect the skin. Fragrances are the second most common cause of allergic contact dermatitis.
  • Preservatives. Preservatives such as formaldehyde and parabens are in lots of products. These include fabrics, baby products and cosmetics. They are common triggers for allergic contact dermatitis.
  • Latex. Natural rubber latex is found in 40,000+ products, including many household items. They are also used in gloves and medical products. Exposure to latex can cause allergic contact dermatitis.
  • Topical medications. Topical antibiotics such as neomycin and bacitracin are often used on skin. They are common triggers for allergic contact dermatitis.

You can have both irritant and allergic contact dermatitis at the same time. A board-certified allergist will be able to determine if your condition is from an allergen or irritant.

Contact Dermatitis Symptoms

Contact dermatitis symptoms typically involve a rash. But symptoms may vary depending on if you have irritant contact dermatitis or allergic contact dermatitis. If you have symptoms of a contact dermatitis rash, make an appointment with your healthcare provider.

Symptoms of irritant contact dermatitis

These symptoms are often found on the hands. They can also occur on the face and eyelids, neck area, and diaper area in babies. The rash is often symmetrical with clear borders. Normally, it does not spread.

Irritant contact dermatitis symptoms include:

  • Itchy rash
  • Painful skin irritation
  • Swelling
  • Red patches on light skin, brown or purplish patches on dark skin.
  • Blisters or pustules (pus filled pockets of skin)
  • Broken blood vessels in the skin (called hemorrhage)
  • Crusty skin
  • Scaly skin
  • Skin breakdown

Symptoms of allergic contact dermatitis

Symptoms are often found on the hands, fingers and forearms. They can also appear on the face and eyelids, neck area, abdomen, and legs. Often the rash is asymmetrical without clear borders. It may start in one area but spread to another. Let’s say your hands touch poison ivy. You may get a rash on the hand that touched it. Then maybe you rub your face or mouth. That’s how the rash spreads.

Allergic contact dermatitis symptoms include:

  • Very noticeable itchy rash
  • Red or darkened skin patches
  • Scaly skin
  • Dry skin
  • Leathery skin
  • Cracks in skin
  • Skin shedding

Allergic contact dermatitis symptoms often appear in phases instead of all at once. Leathery, cracked, itchy skin is more consistent with allergic reactions.

How is Irritant or Allergic Contact Dermatitis Diagnosed?

Skin problems can be hard to diagnose. If you think you have a contact dermatitis rash, make an appointment with a healthcare provider. An allergist or dermatologist will be able to make the diagnosis.

There is no specific test or procedure to confirm a diagnosis of contact dermatitis. Your healthcare provider will take your medical history and perform a physical exam. Some questions to expect:

  • When did your symptoms start?
  • Have you started using any new products at home?
  • Have you started wearing new jewelry?
  • What do you do for work?
  • Are you routinely exposed to any harsh soaps or irritating chemicals?

You may want to come to an appointment with a doctor with a list of any new soaps, detergents, skincare or cleaning products you are using.

If there is concern about a potential workplace exposure, let your doctor know. Come to the appointment with a list of potential substances that you’re around at work.

If you suspect you have allergic dermatitis, your doctor may recommend a procedure called patch testing. A patch test involves placing a patch containing allergens on your skin. The patch stays on your skin for 48 hours. Your doctor will check your skin when the patch comes off, then may check again a few days later, since some allergic reactions take longer to show up. A reaction at a patch site helps confirm an allergic contact dermatitis diagnosis.

If your specialist, allergist or dermatologist suspects other causes of your skin reaction, you may need to undergo further testing. Some of the tests will be to rule out other skin diseases or infections.

Image of hands rubbing contact dermatitis medication on the other hand.

Treatment Options for Contact Dermatitis

How is irritant or allergic contact dermatitis treated? Treatment focuses on managing and reducing symptoms. This gives the skin time to heal. Treatment also aims to reverse any skin damage.

Contact dermatitis involves different healing stages. Some treatments are needed for certain stages. Work with your healthcare provider to determine the right treatment for your symptoms.

Contact dermatitis treatment includes:

Over-the-counter (OTC) treatments

  • Burrow’s solution, calamine lotion, or oatmeal baths to help dry oozing skin.
  • Cold compresses for itchy rash
  • OTC topical corticosteroids (hydrocortisone cream) to help with inflammation

Prescription treatments

  • Prescription topical corticosteroids
  • Oral or intravenous corticosteroids – usually given in a short course or burst for severe cases
  • Topical immunomodulators – anti-inflammatory medicines, such as tacrolimus or pimecrolmus, for sensitive areas like the face or eyelids, or when longer-term treatment is needed without steroid side effects

If your treatment is not working, your healthcare provider may recommend phototherapy. This is an in-office procedure to expose affected skin to ultraviolet light. It provides relief from itching and swelling and allows the skin time to heal. Phototherapy is a second-line treatment for skin conditions. It is only recommended when other treatments have not worked.

As your skin heals, talk with your healthcare provider about using a moisturizer regularly. Taking steps to protect your skin can help prevent future flare-ups of contact dermatitis.

Ask your healthcare provider how to protect your skin when spending time outdoors, including how to safely manage sun exposure.

A close-up image of a person’s knee shows a large, red, inflamed rash, likely due to contact dermatitis. The skin appears irritated and possibly swollen, suggesting an allergic reaction. The background is a soft, neutral color, likely a towel or fabric.

What if my contact dermatitis becomes infected?

Contact dermatitis can become infected if you constantly scratch the affected area. This opens up the skin and allows bacteria or fungi to grow.

Symptoms of contact dermatitis infection may include:

  • increased pain on the affected area
  • an oozing discharge from the skin
  • you feel hot or you have the shivers

Contact dermatitis can turn severe with an infection. If you notice signs of infection or think your skin may be infected, schedule an appointment with your healthcare provider. In addition to over-the-counter and prescription medications, your healthcare provider may give you pills such as antibiotics to help fight the infection.

Tips for Preventing Contact Dermatitis

Simple steps can help protect your skin, reduce irritation, and prevent contact dermatitis from getting worse.

  1. Try your best to avoid scratching affected skin. This will prevent contact dermatitis from worsening. If you must scratch, try stroking the itchy area using the top side of your hand instead of your fingernails.
  2. Identify allergens and irritants and develop strategies to avoid contact with them.
  3. Avoid excessive handwashing.
  4. Use mild, fragrance-free soaps, detergents and cleansers.
  5. Use soft, non-scratching cloths on the skin.
  6. Ensure that clothes and other items made of leather, cotton, or other materials are soft and don’t irritate the skin.
  7. Avoid tight-fitting clothes.
  8. Don’t use belt buckles with metal or wear jewelry if you’re allergic to nickel.
  9. See a doctor if a rash doesn’t improve after trying home remedies.

Questions & Answers (Q&A) on Contact Dermatitis

Explore our Q&A below for quick answers to the most frequently asked questions about contact dermatitis.

Contact dermatitis is not contagious. But if you have symptoms and you touch someone else, you can transfer it to them under certain conditions. For example, if you have poison ivy on your hands and you touch someone, you could transfer the poison ivy to that person. It is important to quickly wash your hands after making contact with an allergen or irritant.

You can get contact dermatitis on your lips. If an allergen or irritant touches your lips, it can cause contact dermatitis.

Vaginal (vulvar) dermatitis is caused by contact with an allergen or irritant. Some potential triggers could be soaps, feminine hygiene products, or scented toilet paper. Talk with a healthcare provider.

Treatment for contact dermatitis on the hands is no different than other areas of the body. But hands can be harder to treat since they are constantly exposed to water, soap, and friction throughout the day. This can rub off creams and re-trigger irritation. Use OTC lotions or creams. If symptoms don’t improve, talk with your doctor about prescription treatments.

You may also want to limit your handwashing and use a mild fragrance-free soap.

Atopic dermatitis is a chronic inflammatory skin condition. It can cause itchiness on red, brown, purple or ashen gray patches (depending on your skin color). Atopic dermatitis also involves dry, scaly or thickened skin, and open, oozing, crusty sores.

Like contact dermatitis, atopic dermatitis can be triggered by allergens and irritants. But contact dermatitis strictly involves physical contact with the allergen or irritant.

Contact dermatitis often looks different in people with skin of color. On people with light skin, symptoms typically appear red, but on Black or Brown skin, they may appear as brown, purplish or ashen gray. These differences can sometimes make diagnosis a challenge for people with skin of color.

You can develop contact dermatitis from an allergic reaction to ChapStick. Ingredients for the product typically include fragrances, dyes, and other substances that are possible allergens.

There is no cure for contact dermatitis – other than to avoid your trigger(s). For many, that can be easier said than done. It may take time, patience, and trial and error to figure out your trigger. Then you must develop ways to avoid touching your trigger. Working closely with your healthcare provider can help you reduce the risk of getting contact dermatitis again.

Yes, contact dermatitis can go away on its own – but until it does, symptoms are often a problem without treatment. You could also risk getting an infection. That’s why healthcare providers recommend you take medications and avoid allergens and irritants.

Conditions that can look like eczema 

Several skin and immune conditions cause rashes, itching, or swelling that get mistaken for eczema. They differ in what triggers them, how they are diagnosed, and how they are treated. If a rash is not responding to eczema treatment, ask a board-certified allergist or dermatologist whether one of these could be the cause: 

  • Aquagenic urticaria causes hives after contact with water.
  • Celiac disease can cause dermatitis herpetiformis, an intensely itchy blistering rash.
  • Chronic spontaneous urticaria (CSU) is hives lasting six weeks or longer with no identifiable trigger.
  • Chronic urticaria (hives) causes welts that move around, with individual welts usually fading within 24 hours.
  • Cold urticaria brings on hives, swelling, and welts after exposure to cold.
  • Contact dermatitis is actually a form of eczema, but it is triggered by an allergen or irritant touching the skin rather than by atopic disease.
  • Hereditary angioedema (HAE) causes deep swelling without hives or itching, and does not respond to antihistamines or corticosteroids.
  • Mast cell diseases, including mastocytosis and mast cell activation syndrome, can cause unexplained skin rashes along with other body-wide symptoms.
  • Primary immunodeficiency diseases include several disorders that produce severe, treatment-resistant eczema-like rashes starting in infancy.
  • Psoriasis produces thick, sharply defined, scaly plaques, often on elbows, knees, and scalp.
  • Rosacea causes flushing, lasting changes in skin color, and sometimes acne-like bumps on the face, often with burning or stinging.
  • Scabies is caused by tiny mites that burrow into the skin, producing a rash with intense itching that often worsens at night.
  • Seborrheic dermatitis is a form of eczema that causes flaky, sometimes greasy patches on the scalp, face, and other oily areas of the skin.

October 2026
Reviewed by:
William E. Berger, MD, FACAAI, is a board-certified allergist and immunologist who serves as Medical Director with Allergy & Asthma Network. He is a Distinguished Fellow and Past President (2002-03) of the American College of Allergy, Asthma & Immunology (ACAAI).