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People with nummular eczema, also called discoid eczema or nummular dermatitis, deal with inflamed skin and rashes that resemble coin-shaped discs or plaques and appear mostly on the lower legs, forearms, hands, and trunk. Typically, discoid eczema does not develop on the face or scalp. The most common symptom of this condition is itchiness that can reach a level of extreme discomfort. Eczema is not contagious but is generally a chronic condition. In women, dermatitis usually develops in the teens or young adulthood, while men tend to develop it later in life.

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1. Symptom: Scales or Crusts

The difference between discoid eczema and skin infections can be difficult to identify. People with eczema have up to 50 round or oval raised plaques with well-defined edges. Some might have scales or a yellowish crust. If the patches are a skin infection, people will generally see blisters filled with pus, sores that look like cold sores, and streaks of redness spreading across the skin. Infections also come with other symptoms like a fever, pain, flu-like symptoms or swollen lymph nodes or tonsils. Eczema does not.

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