"Nummular" is derived from the Latin word nummus, which means coin, and is used to describe a dermititis characterized by round plaques of eczema. The eruptions of nummular dermatitis are often recurrent and chronic and usually appear in people in there later stages of there life mostly after there 60s but in some rare cases can occur before that time.
Cause:
The cause of this skin disorder as in the case of most dermatitis is unknown. Since the cause of this is unknown the prevention of this problem is almost impossible but there are certain measures that could be taken. For this purpose moisturizers could be used to help control the dryness of the skin.
Signs and Symptoms:
An eruption may begin with one or few round red plaques with overlying blisters. These if not taken care of early may enlarge to several centimeters with clearly marked edges, and overlying scale may be prominent. Swelling and oozing occur in newer lesions and itching can be mild to severe. If scratched these plaques may become infected and other problems on the skin might occur.
Anatomical Location:
Nummular dermatitis commonly affects the lower part of the body namely legs and buttocks, although the trunk and arms can also be affected. The initial spots are quite persistent and after clearing may recur in the same location. Nummular dermatitis can resolve completely, though typically it persists for some years. The Flare-ups most often occur during the winter months, although humid summers can aggravate the condition.
Diagnosis:
Diagnosis is usually based on a visual examination by a medical practitioner. Sometimes a skin biopsy is obtained to confirm the diagnosis and to rule out other disorders.
