What is Dermatitis? Dermatitis is a general medical term used to describe inflammation of the skin. It typically involves an intensely itchy rash appearing on swollen, reddened, or dry skin. It is a very common condition that is strictly non-contagious , meaning you cannot catch it from or give it to someone else. However, chronic flares can be physically uncomfortable and cause significant self-consciousness. Common forms include Eczema, Seborrheic Dermatitis (Dandruff), and allergic contact rashes. Common Types & Symptoms Because "dermatitis" is a broad umbrella term, your specific symptoms will depend entirely on the type you are experiencing: 1. Atopic Dermatitis (Eczema) Usually beginning in early infancy, this is a chronic condition. It typically appears as a red, itchy rash in areas where the skin flexes—such as the inside of the elbows, behind the knees, and the front of the neck. If the area is scr...