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Health.com: What Your Looks Say About Your Health

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Dark Skin Patches

A ring of dark skin at the back of the neck may look like it's crying out for a good scrubbing. But in reality, it may be acanthosisnigricans, a condition in which the skin appears darker and thicker—even velvety—along body creases.

People with insulin resistance, diabetes, obesity or, in rare cases, cancer, can
Health
develop these dark patches. Although not a definitive sign of diabetes, "It makes you think twice and do more workup," says Heather Jones, a nurse practitioner at Oregon Health and Science University, in Portland, and a member of the Dermatology Nurses Association board of directors.

(Photo Credit: Getty Images/Text: Karen Pallarito)




The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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