There are many types of eczema, each with different causes and treatments. One important thing to know is that eczema is not contagious.
The two most common types of eczema are atopic dermatitis and contact dermatitis. Other types of eczema include dyshidrotic eczema, neurodermatitis, nummular eczema, and seborrheic dermatitis.
Atopic dermatitis
Atopic dermatitis is the most common and chronic form of eczema. It can affect any area of the body, but most commonly affects the face, hands, inside the elbows and behind the knees.
It’s very common in people who also have asthma and allergic rhinitis (hay fever). It’s thought to be caused by a combination of genetic, environmental and immune system factors, and can be triggered by allergens and irritants like:
- dust mites
- pet dander
- wool
- certain foods
- detergents
- soaps
- solvents
Atopic eczema can be made worse by things like heat or changes in temperature, skin infections, stress and hormonal changes, such as during pregnancy.
Contact dermatitis
Contact dermatitis, also called allergic contact dermatitis, is brought on through frequent or prolonged contact with irritants and allergens, such as:
- soaps
- detergents
- strong cleaning agents
- nickel
- hair dye
- rubber
- perfumes
- poison ivy
Contact dermatitis can affect anyone, but it’s more common in those who are exposed to allergens or irritants in their workplace.