Nummular eczema

Alternative names:

eczema - nummular

Definition:

A hypersensitivity (allergy related) skin disorder causing characteristic coin-shaped lesions.

Causes, incidence, and risk factors:

The cause of nummular eczema is unknown, but there usually is a personal or family history of allergies, atopic dermatitis, or similar disorders. It is a relatively uncommon disorder that most often occurs in elderly men.

Eczema is generally a chronic, recurring condition. Exposure to environmental irritants may worsen symptoms, as can dryness of the skin, temperature changes, and stress. Nummular eczema can also be aggravated by eating foods containing iodides or bromides.