BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuMelasmaChloasma; Mask of pregnancy; Pregnancy maskMelasma is a skin condition that causes patches of dark skin on areas of the face exposed to the sun. Causes Melasma is a common skin disorder. It most often appears in young women with brownish skin tone, but it can affect anyone.Melasma is often associated with the female hormones estrogen and progesterone. It is common in:Pregnant women Women taking birth control pills (oral contraceptives) Oral contraceptivesBirth control pills (BCPs) contain man-made forms of 2 hormones called estrogen and progestin. These hormones are made naturally in a woman's ovarie...Read Article Now Book Mark Article Women who are taking hormone replacement therapy (HRT) during menopause. Being in the sun makes melasma more likely to develop. The problem is more common in tropical climates. Symptoms The only symptom of melasma is a change in skin color. However, this color change can cause distress about your appearance.The skin color changes are most often an even brown color. They often appear on the cheeks, forehead, nose, or upper lip. Dark patches are often symmetrical. Exams and Tests Your health care provider will look at your skin to diagnose the problem. A closer exam using a device called a Wood's lamp (which uses ultraviolet light) may help guide your treatment.Wood's lampA Wood lamp examination is a test that uses ultraviolet (UV) light to look at the skin closely.Read Article Now Book Mark Article Treatment Treatments may include:Creams that contain certain substances to improve the appearance of melasma Chemical peels or topical steroid creams Laser treatments to remove the dark pigment if melasma is severe Stopping hormone medicines that may be causing the problem Medicines taken by mouth Outlook (Prognosis) Melasma often fades over several months after you stop taking hormone medicines or your pregnancy ends. The problem may come back in future pregnancies or if you use these medicines again. It may also come back from sun exposure. When to Contact a Medical Professional Call your provider if you have darkening of your face that does not go away. Prevention The best way to lower your risk for melasma due to sun exposure is to protect your skin from the sun and ultraviolet (UV) light.Things you can do to lower your exposure to sunlight include:Wear clothing such as hats, long-sleeved shirts, long skirts, or pants. Try to avoid being in the sun during midday, when ultraviolet light is most intense. Use high-quality sunscreens, preferably with a sun protection factor (SPF) rating of at least 30. Pick a broad-spectrum sunscreen that blocks both UVA and UVB light. Apply sunscreen before going out into the sun, and reapply often -- at least every 2 hours while in the sun. Use sunscreen year-round, including in the winter. Avoid sun lamps, tanning beds, and tanning salons.Other things to know about sun exposure:Sun exposure is stronger in or near surfaces that reflect light, such as water, sand, concrete, and areas painted white. Sunlight is more intense at the beginning of the summer. Skin burns faster at higher altitudes.Open ReferencesReferencesDinulos JGH. Light-related diseases and disorders of pigmentation. In: Dinulos JGH, ed. Habif's Clinical Dermatology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 19.James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Disturbances of pigmentation. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. Andrews' Diseases of the Skin: Clinical Dermatology. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 36.AllVideoImagesTogSelf Care Skin and hair changes during pregnancyRelated Information Review Date: 11/10/2020 Reviewed By: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.