In general, atopic dermatitis will come and go, often based on external factors. Although its cause is unknown, the condition appears to be an abnormal response of the body’s immune system. In people with eczema, the inflammatory response to irritating substances overacts, causing itching and scratching. Eczema is not contagious and, like many diseases, currently cannot be cured. However, for most patients the condition may be managed well with treatment and avoidance of triggers. The other forms of eczema are Hand & Feet eczema, Nummular eczema, Allergic contact dermatitis, Photodermatitis, Lichen simplex chronicus & Xerotic eczema.