Many people may be unaware that there are numerous types of eczema. The different types of eczema cause different symptoms and have different triggers or causes.
Atopic dermatitis, often referred to as eczema, is the most common type of that. Atopic dermatitis is also called dermatitis or atopic eczema. The cause of atopic dermatitis is thought to be genetic.
An itchy, inflamed rash is a common symptom of atopic dermatitis. The rash may also be dry and flaky or weeping. Of the young children who develop atopic dermatitis, about half will continue to have symptoms into adulthood.
Exposure to an allergen can cause contact dermatitis. An allergen is a substance that causes a reaction from a hypersensitive immune system.
Soaps, shampoos, hair dye, and some metals are examples of common allergens that can cause contact dermatitis in people with hypersensitive immune system. Contact dermatitis can cause an itchy, red, dry rash. Severe contact dermatitis can cause blisters to form.
Some types of eczema are not typically seen in patients younger than middle age. Stasis eczema is a type of eczema that affects people over the age of forty. The unique cause of this type of eczema is poor circulation.
Nummular eczema, also called discoid eczema or nummular dermatitis, is a type of eczema that causes blisters in small coin-shaped patches. Though the cause of this type of eczema is not completely understood, it is thought to be caused by hypersensitivity to some metals and medications.
The elderly are prone to developing a type of eczema called asteatotic eczema. If an elderly person has dry skin, asteatotic eczema can develop and cause painful cracks in the dry skin.
Seborrheic dermatitis is a type of eczema that commonly affects the scalp but may also affect the face and other parts of the body. Cradle cap and dandruff are forms of seborrheic dermatitis.
Dyshidrotic eczema causes a severe eczema rash with blisters, intense itchiness, and deep, painful cracks. The exact cause of dyshidrotic eczema is not well understood, but it most often occurs to people who have personal or family medical histories of asthma, eczema, or hay fever.
A type of eczema that is caused by an irritation of the nerves is called neurodermatitis. Neurodermatitis causes intense itchiness that is persistent.