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    Dermatology Has a Problem With Skin Color

    In the spring, teenagers started showing up at doctors’ offices in droves with angry red and purple blisters on their fingers and toes. The latest unexpected feature of the coronavirus infection fascinated the public, and suddenly photographs of so-called Covid toes were everywhere on social media.

    But almost all of the images depicted glossy pink lesions on white skin. Though people of color have been affected disproportionately by the pandemic, pictures of Covid toes on dark skin were curiously hard to find.

    The problem isn’t unique to Covid toes or to social media. Dermatology, the medical specialty devoted to treating diseases of the skin, has a problem with brown and black skin. Though progress has been made in recent years, most textbooks that serve as road maps for diagnosing skin disorders often don’t include images of skin conditions as they appear on people of color.

    That’s a glaring omission that can lead to misdiagnoses and unnecessary suffering, because many key characteristics of skin disorders — like red patches and purple blotches — may appear differently on people with different complexions, experts say.

    “Pattern recognition is central to dermatology, and a lot of the pattern recognition is training your eye to recognize certain colors that trigger you to think of certain diseases,” said Dr. Jenna Lester, director of the skin of color program at the University of California, San Francisco.

    “But the color in question is impacted by the surrounding color,” she said. “It can look different in darker skin. If you’re only trained to look at something in one color, you won’t recognize it in another color.”

    Credit…
    Credit…Northwestern University, via Associated Press

    Dr. Lester recently reviewed 130 images of coronavirus skin disorders published in medical journals and found they were overwhelmingly of white people.

    As the coronavirus spread, dermatologists started an international registry to catalog examples of skin manifestations of Covid-19. The registry compiled more than 700 images, but only 34 of disorders in Hispanic patients and 13 in Black patients were submitted.

    It wasn’t until July that Dr. Roxana Daneshjou and her colleagues at Stanford University published some of the first pictures of Covid toes in nonwhite patients in the Journal of the American Academy of Dermatology.

    “We know for certain that if dark skin images are not well represented, skin doctors — but also other doctors who are not skin experts — are at a disadvantage for making a proper diagnosis,” said Dr. Hao Feng, an assistant professor of dermatology at the University of Connecticut.

    Dr. Feng reported recently that the omissions are still pervasive in textbooks, where only 10 percent of images illustrate dermatologic diseases in dark skin. When pictures of Black patients were available, they most often described syphilis. He found that one digital resource, VisualDx, had a more diverse display of images: 28.5 percent represented dark skin.

    “If you have no experience with this in people of color, it’s like saying you don’t know how to examine the lungs or the heart,” said Dr. Art Papier, a dermatologist who co-founded VisualDX.

    All doctors observe the skin for clues to disease. Changes in the skin can be the first indication of life-threatening conditions like sepsis, cellulitis or severe drug reactions to medications.

    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx

    Images of skin cancer in dark skin were underrepresented in educational materials examined in Dr. Feng’s study — yet skin cancer, though less common in people with darker skin, is more deadly in Black and Hispanic patients, and often diagnosed at a later stage.

    The five-year survival rate is 66 percent for non-Hispanic Black patients, compared with 90 percent for non-Hispanic white patients.

    Black patients are generally less likely than whites to see a dermatologist and less likely to undergo screening for skin cancer. Even when they do see a dermatologist, studies have shown, Black patients are less likely to get certain treatments than white people with the same conditions, like oral antibiotics for acne.

    “I can tell you from my own clinical experience a lot of things get missed because people don’t recognize the disease process in darker skin,” Dr. Feng said.

    Even relatively common skin conditions can stump physicians if they have never seen them in people of color.

    When Dr. Lester was in medical school, she recalled, a Black patient came to the clinic with a mysterious rash that had a purplish hue. “No one knew what it was,” Dr. Lester said.

    A biopsy revealed it was a common skin condition that doctors usually diagnose on sight, without tests or procedures: psoriasis. Yet it often goes unidentified and untreated in people of color.

    The medical literature describes psoriasis as “salmon pink patches with silvery white scales, but that’s not what it looks like in dark skin,” Dr. Lester said. “It has more of a purple hue, and a lot of my Black patients put tons of moisturizer on when the skin is dry, so the scales aren’t as visible.”

    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx

    Many garden-variety rashes will vary in appearance in different complexions. Eczema, which is typically described as making skin red and itchy, tends to be more bumpy in Black people, Dr. Lester said. Pityriasis rosea is usually described as having a distinctive pattern composed of a large spot with smaller spots branching out from it — but it may not appear this way in people with dark skin.

    Melanoma, the most serious form of skin cancer, often develops in Black people in spots where doctors may not think to look for it: on the palms of the hands or soles of the feet.

    Doctors often miss rosacea in Black patients, too, because clinicians expect to see redness and visible blood vessels on the face, said Dr. Amy McMichael, chair of the dermatology department at Wake Forest Baptist Health in Winston-Salem, N.C.

    “You don’t see as much red if the background skin color is brown,” she said.

    Pallor, which can be an indication of anemia as well as reduced blood flow and oxygen, will also have a different appearance in Black patients, said Dr. Lynn McKinley-Grant, an associate professor at Howard University College of Medicine and president of the Skin of Color Society, which promotes awareness and education about these variations.

    “It’s a different color, kind of a grayish color,” she said. “I have actually thought of George Floyd. When he’s on the ground, his skin is a gray brown, showing lack of oxygen.”

    Kawasaki disease, a children’s disease that bears similarities to a Covid-19 complication called multisystem inflammatory syndrome, causes inflammation in blood vessels and presents with redness, but “how it appears in darker skin tone is very different,” said Dr. Susan Taylor, associate professor of dermatology at the University of Pennsylvania Perelman School of Medicine.

    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx
    Credit…VisualDx

    “You don’t want to miss that in a kid because you don’t know how to look for the rash and your eye isn’t trained to see it,” she said.

    Dr. Taylor is a co-author of “Dermatology for Skin of Color,” one of the first textbooks that focused on the treatment of skin conditions in moderately to heavily pigmented skin. But new textbooks are not the solution, she said.

    “We shouldn’t have to write separate textbooks — that information should be integrated into the quote-unquote standard textbooks,” Dr. Taylor said.

    Nearly half of dermatologists and dermatology residents say they were not adequately trained to treat skin conditions in people of color. For Black patients, that often translates into a prolonged, disheartening search for the right diagnosis.

    When Tierra Styles, 31, of Auburn, Ga., asked her pediatrician about a rough patch of skin on the back of her toddler’s neck, the doctor said it was nothing. On later visits, it was diagnosed as scabies, then eczema. But the prescribed ointments had no effect.

    Finally, Ms. Styles took her son to a dermatologist who was Black. She said the sandpaper-like patch was a benign skin condition called keratosis pilaris.

    “The doctor tried to pull up a picture on the internet, but she couldn’t find one,” Ms. Styles said. “There was not one picture of an African-American person that she could show me.”

    Ellen Buchanan Weiss, a white mother of a multiracial child in Raleigh, N.C., was so frustrated by her fruitless online searches for information on her child’s skin rashes that she started her own repository of skin images in an Instagram feed called Brown Skin Matters.

    Anyone can submit a photo; a physician reviews the images before they are posted.

    “It started as a casual reference for other mothers,” Ms. Weiss said. “What’s been surprising to me is that it’s been used mostly by clinicians — doctors, nurses, professionals teaching in medical schools.”

    Many Black patients prefer to see Black dermatologists, who may be more familiar with and have a greater understanding of not only skin issues — like acne, which can leave dark, hyperpigmented spots on dark skin — but hair predicaments, said Dr. Natalie Moulton-Levy, a dermatologist in Manhattan.

    Credit…Jeenah Moon for The New York Times

    “We as Black people don’t do hair the same way a non-Black person does,” Dr. Moulton-Levy said. “When you’re giving treatment options, some dermatologists are not familiar with that and say, ‘OK, you have to wash your hair every day.’ We don’t wash our hair every day.”

    But getting in to see a dermatologist can be difficult, and waits are notoriously long. There is a shortage of dermatologists generally, and a shortage of dermatologists of color in particular: Only 4 percent of practicing dermatologists identify as Hispanic, and only 3 percent identify as Black or African-American, according to one study.

    Black and Hispanic patients are far more likely than white patients to use the emergency room for dermatology problems, especially in rural areas and smaller cities where there are fewer dermatologists, studies have shown. People of color are half as likely as white patients to see a dermatologist for the same conditions.

    Health insurance can also be a barrier to care. A 2014 study by the physician staffing firm Merritt Hawkins reported that dermatology was among the specialties least likely to accept Medicaid, with only 27 percent of dermatologists accepting payment from the government health plan compared with 63 percent of cardiologists.

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    At some safety-net hospitals, waits as long as a year to see a dermatologist have been recorded. Delayed doctors’ appointments, especially for pediatric dermatologists, can have serious consequences.

    A Connecticut woman said that when her biracial daughter first developed patches of blanched, hypopigmented skin at age 10, it was misdiagnosed as a benign condition called pityriasis alba.

    The woman, who asked not to be identified, to protect her daughter’s privacy, tried to get her child an appointment with a dermatologist, but few in the area took Medicaid and those who did had an eight-month wait.

    When the mother switched jobs and obtained commercial health insurance, she made an appointment with a specialist at Yale University, who diagnosed her daughter with a rare cancer, primary cutaneous T-cell lymphoma, also called mycosis fungoides.

    The treatment, which consists of ultraviolet light therapy, has been successful, and the blanched spots are no longer visible on her daughter’s “medium brown skin,” the mother said. But it took two years to get the diagnosis. When she searched online, she said, “I couldn’t find anything that looked like my daughter, and it was mostly images of white skin.”

    Physicians often say that they “do not see color,” Dr. Moulton-Levy said. “They are trying in a nice, benevolent way to say skin color doesn’t matter.”

    “But it absolutely matters, in dermatology and all of health care,” she said. “‘Colorblind’ is a very difficult term for me to hear.”

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