Eczema is a skin condition caused by a deficiency of oils and moisture in the skin. Healthy skin maintains its balance of these components, creating an effective barrier to environmental damage, irritation, and infection. Scalp eczema can be caused by either seborrheic or atopic (inherited) dermatitis. It is also known as dandruff, seborrheic dermatitis, seborrheic psoriasis, and (in infants) “cradle cap.”  These types of dermatitis may also cause eczema on the face, chest, back, under the arms, and in the groin region.  While they can cause discomfort and embarrassment, these types of dermatitis aren’t contagious, and they aren’t caused by poor hygiene.  If you understand the causes and symptoms of scalp eczema, you may be able to treat or heal your scalp.