What does "dermatitis" mean and what are common types?

Dermatitis means inflammation of the skin, from dermat meaning skin and itis meaning inflammation. Common types include contact dermatitis caused by direct skin contact with an irritant or allergen, atopic dermatitis also called eczema which is a chronic itchy condition often associated with allergies and asthma, seborrheic dermatitis which causes scaly patches on oily areas like the scalp and face, and stasis dermatitis from poor circulation in the lower legs. The general term dermatitis describes any skin inflammation regardless of cause.