Discoid Eczema (Nummular Dermatitis)

Eczema or Dermatitis is a term used to describe conditions in where there is inflammation of skin. There are several types of eczema and Discoid eczema is one type which causes round or oval red patches of inflamed skin. It is also known as Nummular dermatititis which means coin shaped lesions. 

Discoid eczema is usually seen in adults with dry skin although it can affect teenagers and young children, but this is rare.

Clinical Features

• typically present as round or oval plaques on the extremities
• the lesions are extremely itchy
• central clearing may occur giving a similar appearance to tinea corporis

Some other symptoms might include:

• Burning sensation
• Inflamed skin
• Redness
• Raw skin

Diagnosis: is generally by the simple observation of the physical appearance of the skin, and typical coin shaped lesions. Sometimes to rule out other skin conditions a skin biopsy may be done. 

Treatment: is almost same as for other types of eczema. These include

Moisturizers: which can help improve itching and redness and prevent the skin from becoming dry.
Antibiotics:Using topical or oral medication may also help to reduce the discomfort caused by nummular eczema and if there is any infection or fluid filled blister. 

Antihistamines may be helpful in patients with extremely itchy skin. 

Corticosteroids are reserved for severe cases and can be given to control the symptoms.