Eczema, also known as dermatitis, is an itchy, often weeping or crusting inflammation of the skin. In the UK, it is very common and can be quite irritating. The term Eczema is generally used when referring to atopic eczema, which is the most common type. There are other forms though. Atopic eczema typically affects children, with around one in five children in the UK having the condition. In most cases the condition develops before the age of five. Many children develop it as babies, before their first birthday. However the condition can develop for the first time in adults too.