Discoid Eczema is a relatively less common kind of Eczema. It is also referred to as Nummular Dermatitis or gravitational eczema and can occur at any age. However it is most commonly seen in middle-aged men. Discoid Eczema is easy to tell, the rash on the skin appears in the form of red coin shaped discs. The word "nummular" comes from the Latin nummus, meaning coin, and is characterized by round plaques of eczema. More cases are reported in winter, when the air is dry and the humidity is less. Discoid Eczema is extremely itchy and uncomfortable. Like most other forms of Eczema it is difficult to pinpoint the exact cause for it. Discoid Eczema is not contagious, is not caused by a food allergy and is not usually inherited. But it is a recurrent and chronic condition.