Causes of Eczema .

In most cases there is a familial predisposition. Atopy ( allergic rhinitis , asthma and hay fever ) is the term doctors use to describe this predisposition. However, the environment plays a significant role as well (such as heat in the summer and dry winters). There are two types of eczema. Atopic eczema is thought to be a hereditary condition . People with atopic eczema are sensitive to allergens in the environment which are harmless to others. In atopic eczema there is an excessive reaction by the immune system. This type of eczema can worsen after eating certain foods or after being exposed to other allergens such as pollen or dust.