Xerosis is a medical term that refers to dry, itchy and rough skin. It is commonly caused by a lack of moisture in the skin, hot showers, harsh soaps, cold weather and certain skin conditions. Some synonyms for xerosis include dry skin, dehydration, itching, scaling, and roughness. The condition can be mild or severe and can affect any part of the body. To relieve symptoms, it is recommended to apply moisturizer frequently, avoid hot showers, use mild soaps, and protect the skin from harsh weather conditions. Keeping your skin hydrated and healthy can prevent xerosis from occurring.