Nummular dermatitis

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Nummular dermatitis
Classification and external resources
ICD-10 L30.0
ICD-9 692.9
DiseasesDB 33703
MedlinePlus 000870
eMedicine derm/298

Nummular dermatitis (also known as "Discoid eczema,"[1] "Microbial eczema,"[1] "Nummular eczema,"[2] and "Nummular neurodermatitis"[2]:82) is one of the many forms of dermatitis. Also known as discoid dermatitis, it is characterized by round or oval-shaped itchy lesions. (The name comes from the Latin word "nummus," which means "coin.")

Presentation[edit]

The disorder is recurrent and chronic, and may appear at any age, although it is most common in people in their 60's. Nummular dermatitis does not appear to be a genetic condition, is not related to food allergies, and is not contagious.

The coin-shaped patches can affect any part of the body, but the legs and buttocks are the most common areas. Flare-ups are associated with dry skin, so the winter season is a particularly bad time for those with this condition.

Other forms of dermatitis are at risk of developing, and patch testing may be helpful in diagnosis.[3]

Other causes[edit]

Nummular eczema can also be worsened by stress and excessive caffeine, which dehydrates the body and thus the skin.[citation needed]

Treatment[edit]

One of the keys to treatment and prevention involves keeping the skin moisturized. Lotions, creams, and bath oils may help prevent an outbreak. If the condition flares up, a common treatment involves the application of topical corticosteroids. Oral antihistamines may help lessen itching. More severe cases sometimes respond to ultraviolet light treatment.

See also[edit]

References[edit]

  1. ^ a b Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 1-4160-2999-0. 
  2. ^ a b James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
  3. ^ Krupa Shankar DS, Shrestha S (2005). "Relevance of patch testing in patients with nummular dermatitis". Indian journal of dermatology, venereology and leprology 71 (6): 406–8. doi:10.4103/0378-6323.18945. PMID 16394482. 

External links[edit]