There are many types of dermatitis. Symptoms can vary depending on the type you have. Here are some:
Contact dermatitis, caused by exposure to an irritant or allergic reaction, typically shows up as a red, itchy rash that is limited to the area of skin exposed to the substance.
Nummular dermatitis, common in people who have dry skin or live in dry environments, shows up as red, itchy, circular patches of weeping, scaly, or crusted skin.
Seborrheic dermatitis, called cradle cap in infants, causes greasy, yellowish scales on the scalp and eyebrows, behind the ears, and around the nose.
Statis dermatitis causes scaling, darkening and swelling of the lower legs. Sometimes ulcerated o open skin appears inside the lower legs around the ankles.
Atopic dermatitis (eczema) can cause extreme, persistent skin itchiness. However, many times, itchiness results simply from dry skin.