No exact cause of eczema has been found yet. Eczema can be of dry or wet type. It is not infectious and is neither hereditary; it is also not caused by any kind of allergy. Discoid eczema can affect all age groups but many times middle age or it affects older men. In younger people, discoid eczema runs along with Atopic eczema while in adults it is associated stress, irritation. In kids sometimes, bacteria cause it. The bacteria related and other causes are given bellow:
* Ostensible skin injury like insect bite or burn may start it off.
* In some kids it shows a sign of manifestation of atopic dermatitis.