Nummular dermatitis

Also called discoid eczema

                coin-shaped lesions on hand Nummular dermatitis: This skin problem often causes coin-shaped rashes on the skin that can itch or burn.

People who get this skin problem often see distinct, coin-shaped (nummular) or oval sores on their skin. Nummular dermatitis often appears after a skin injury, such as a burn, abrasion (from friction), or insect bite. A person may see 1 or many patches. These patches can last for weeks or months.

Your dermatologist may refer to this skin condition as:

  • Nummular dermatitis.
  • Nummular eczema.
  • Discoid eczema.

Nummular dermatitis is not contagious.

Men get nummular dermatitis more often than women get it. Men often have their first outbreak between 55 and 65 years of age. When women get it, they are usually younger. They tend to be teenagers or young adults.

Learn more about nummular dermatitis:

Image used with permission of the American Academy of Dermatology National Library of Dermatologic Teaching Slides.

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