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    An interview with Andrew F. Alexis, MD, MPH

    WebMD Feature

    Expert Q and A: People of Color Face Unique Skin Problems

    People of color will account for approximately half of the U.S. population by 2050, according to projections from the U.S. Census Bureau. This group, which includes blacks, Asians, Latinos, and other ethnicities, are more prone to certain skin conditions because of their genetic make-up and in some cases cultural practices.

    At the annual meeting of the American Academy of Dermatology in Miami Beach, Fla., Andrew F. Alexis, MD, MPH, assistant clinical professor of dermatology at Columbia University College of Physicians and Surgeons in New York City, discussed the leading medical and cosmetic dermatologic concerns in darker-skinned populations and how to treat those conditions.

    Why are people of color more prone to certain skin conditions, and what are the most common conditions?

    Although people of color have more natural protection from ultraviolet (UV) radiation because of the increased amount of melanin (the pigment that gives skin its color), the cells that make melanin pigment tend to be more reactive to inflammation and injury. So pigmentation problems are more common in skin of color.

    In a recent study, acne was the most common skin condition in blacks, followed by pigmentation problems, or dyschromias.

    The most common dyschromia in people of color is post-inflammatory hyperpigmentation (PIH). This refers to increased pigmentation or dark spots at the sites of inflammation.

    Acne is one trigger for PIH, and the resulting dark spots are often of greater concerns than the original pimples.

    In terms of strategies, we can block the production of melanin by using hydroquinone and other bleaching creams; we can block the transfer pigment to the upper layers of the skin by using retinoid creams, which are vitamin A derivatives; we can remove excess pigment in the skin using chemical peels; and we employ sun protection to prevent increased pigment production and UV exposure.

    Melasma, often referred to as the "mask of pregnancy" as that's when it commonly kicks in, is the second most common pigmentation problem in people of color. It presents as dark patches on the cheek, forehead, upper lips, and, rarely, off the face.

    More women than men are affected, but the condition can occur independent of pregnancy and is commonly seen in people in their 40s, 50s, and 60s. Contributing factors are genetic predisposition and hormone and UV exposure.

    It's treated similarly to PIH. However, you have to be really careful with chemical peels as you can run the risk of pigmentary problems, and if very deep peels, even scarring.

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