What is it?

Nummular dermatitis, also known as discoid eczema or nummular eczema, refers to coin-shape rash. It may be dry or covered with fluid, and may itch. Causes for its appearance may include burn, injury to the skin, insect bite and abrasion. It is more common in men. It is not contagious.

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Signs & symptoms

Symptoms include coin shaped eczema, that may itch or ooze fluid.


Diagnosis is based upon findings from medical history and physical examination.


Treatment may include lifestyle changes and avoiding irritants, long baths with hot water, and some soaps. Medications such as antihistamines, corticosteroids ointments, moisturizers and ultraviolet light treatment.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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