Back to Health A to Z. Without treatment, discoid eczema can last for weeks, months or even years. Get advice about coronavirus and eczema from the National Eczema Society. Discoid eczema causes distinctive circular or oval patches of eczema. It can affect any part of the body, although it does not usually affect the face or scalp. On lighter skin these patches will be pink or red. On darker skin these patches can be a dark brown or they can be paler than the skin around them.
Initially, these patches are often swollen, blistered covered with small fluid-filled pockets and ooze fluid. They also tend to be very itchy, particularly at night. Over time, the patches may become dry, crusty, cracked and flaky. See a pharmacist or GP if you think you may have discoid eczema.
They can recommend a suitable treatment. You should also seek medical advice if you think your skin may be infected. A GP should be able to make a diagnosis just by examining the affected areas of skin. In some cases they may also ask questions or arrange some tests to rule out other conditions. A GP may refer you to a doctor who specialises in skin conditions dermatologist if they're unsure of the diagnosis or if you need a patch test.
The cause of discoid eczema is unknown, although it may happen as a result of having particularly dry skin. When your skin is very dry it cannot provide an effective barrier against substances that come into contact with it. It's important to look carefully at all the chemicals in cosmetics and toiletries that may have come into contact with your skin. Contact dermatitis , a type of eczema caused by coming into contact with a particular irritant, may have a role in discoid eczema. However, unlike atopic eczema, discoid eczema does not seem to run in families.
Some medicines may also be associated with discoid eczema, as patches of eczema can appear in people taking:. Dry environments and cold climates can make discoid eczema worse, and sunny or damp humid environments may make your symptoms better.
Discoid eczema is usually a long-term problem, but medicines are available to help relieve the symptoms and keep the condition under control. There are also things you can do yourself to help, such as avoiding all the irritating chemicals in soaps, detergents, bubble baths and shower gels. Occasionally, areas of skin affected by discoid eczema can be left permanently discoloured after the condition has cleared up. Eczema is the name for a group of skin conditions that cause dry, irritated skin.
Other types of eczema include:. Page last reviewed: 30 October Next review due: 30 October Overview - Discoid eczema Contents Overview Treatment. Information: Coronavirus advice Get advice about coronavirus and eczema from the National Eczema Society.