Picture of Xerosis
Xerosis is the official medical term for dryness of the skin, eyes, and mucous membranes. Mild cases of dry skin may be alleviated with moisturizers and emollient lotions and creams. More severe cases of dry skin may be an indication of a more serious condition such as dermatitis, or inflammation of the skin.
Text Reference: American Academy of Dermatology: "Dry Skin"