A non-neoplastic disorder characterized by abnormally dry skin. causes include vitamin a deficiency, sunlight exposure, medications, metabolic disorders, autoimmune disorders, and hereditary genetic disorders.

Xeroderma, xerosis or xerosis cutis, or simply dry skin, is a skin condition characterized by excessively dry skin. The term derives from Greek ξηρός (xeros) 'dry' and δέρμα (derma) 'skin'. In most cases, dry skin can safely be treated with moisturizers (also called emollients)...