Whilst many think of dermatitis as a skin condition in itself, it is actually a general term for skin inflammation that makes skin appear dry, swollen, and discolored.
There are several common types of dermatitis: atopic dermatitis (commonly referred to as eczema, and typically presenting as dry, rough, itchy skin that comes and goes) contact dermatitis (where contact with an irritant or allergen causes rashes that burn, itch, sting or blister), dyshidrotic dermatitis (characterized by small, itchy blisters, typically on the hands and the feet) and seborrheic dermatitis (dandruff).