Nummular dermatitis
Nummular Dermatitis
Nummular dermatitis (pronunciation: /nʌm.jʊ.lər dɜːr.məˈtaɪ.tɪs/), also known as discoid eczema or nummular eczema, is a chronic, pruritic, inflammatory dermatosis characterized by round or oval erythematous plaques.
Etymology
The term "nummular" is derived from the Latin word 'nummus', which means 'coin', as the lesions tend to appear coin-shaped. The term "dermatitis" is derived from the Greek words 'derma' meaning 'skin' and '-itis' meaning 'inflammation'.
Symptoms
The primary symptom of nummular dermatitis is the presence of coin-shaped lesions on the skin. These lesions can be itchy and may ooze fluid. Other symptoms may include dry, scaly, or red skin, and severe itching, especially at night.
Causes
The exact cause of nummular dermatitis is unknown. However, it is often associated with dry skin, particularly during winter months. Other potential triggers include injury to the skin, stress, use of systemic corticosteroids, and infection.
Treatment
Treatment for nummular dermatitis primarily involves the use of topical corticosteroids to reduce inflammation and itching. In severe cases, systemic corticosteroids may be required. Other treatments may include antihistamines to reduce itching, and emollients to hydrate the skin.
Related Terms
- Eczema: A group of conditions that cause inflammation of the skin.
- Dermatosis: A general term used to describe any skin defect or lesion.
- Inflammation: A response by the body's immune system to injury or infection, causing redness, swelling, pain, and heat.
- Corticosteroids: A class of drugs used to reduce inflammation in the body.
- Antihistamines: Drugs that reduce or relieve symptoms of allergic reactions, such as itching or hives.
External links
- Medical encyclopedia article on Nummular dermatitis
- Wikipedia's article - Nummular dermatitis
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