Xerosis
Xerosis; Asteatotic eczema; Eczema craquele
Dry skin occurs when your skin loses too much water and oil. Dry skin is common and can affect anyone at any age. The medical term for dry skin is xerosis.
Xerosis refers to abnormally dry skin or membranes, such as those found in the mouth or the conjunctiva of the eye. This picture shows a close-up of xerotic skin. Note the dry and scaly appearance.
Causes
Dry skin can be caused by:
- The climate, such as cold, dry winter air or hot, dry desert environments
- Dry indoor air from heating or cooling systems
- Bathing too often or too long
- Some soaps and detergents
- Skin conditions, such as eczema or psoriasis
- Diseases, such as diabetes, underactive thyroid, Sjögren syndrome, among others
- Certain medicines (both topical and oral)
- Aging, during which skin gets thinner and produces less natural oil
Symptoms
Your skin may get dry, scaly, itchy, and red. You may also have fine cracks on the skin.
The problem is usually worse on the arms and legs.
Exams and Tests
The health care provider will examine your skin. You'll be asked about your health history and skin symptoms.
If the provider suspects the dry skin is caused by a health problem that hasn't been diagnosed yet, tests will likely be ordered.
Treatment
Your provider may suggest home care measures, including:
- Moisturizers, especially creams or lotions that contain urea and lactic acid
- Topical steroids for areas that get very inflamed and itchy
If your dry skin is from a health problem, you'll likely be treated for it as well.
Prevention
To prevent dry skin:
- Do not expose your skin to water more often than needed.
- Use lukewarm bath water. Afterward, pat the skin dry with the towel instead of rubbing.
- Choose gentle skin cleansers that are free from dyes and perfumes.
References
American Academy of Dermatology Association website. Dry skin: Overview.
Coulson IH. Xerosis. In: Lebwohl MG, Heymann WR, Coulson IH, Murrell DF, eds. Treatment of Skin Disease: Comprehensive Therapeutic Strategies. 6th ed. Philadelphia, PA: Elsevier, 2022:chap 258.
Dinulos JGH. Atopic dermatitis. In: Dinulos JGH, ed. Habif's Clinical Dermatology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 5.
Version Info
Last reviewed on: 11/18/2022
Reviewed by: Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
