Dermatitis is an itchy inflammation of the skin. It is not contagious or dangerous, but it can be uncomfortable. There are many types of dermatitis, including allergic dermatitis, eczema, and seborrheic dermatitis (which causes dandruff). Eczema is a chronic condition, and symptoms may come and go.
Signs and Symptoms
- Itching, pain, stinging, or burning
- Blisters, thick or scaly skin, sores from scratching
- Swelling, redness
What Causes It?
- Contact dermatitis. Caused by allergic reactions (for example, to poison oak or ivy, or soaps, or detergents).
- Seborrheic dermatitis. May be caused by oily skin or hair, or brought on by stress.
- Atopic dermatitis (eczema). Exact cause is unknown, but may be due to a combination of dry skin and an autoimmune reaction. People who have eczema often have other allergies.