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Periorbital hyperpigmentation
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<p>Periorbital hyperpigmentation, also known as hereditary dark circles, is characterized by darker skin around the <a href="/facts/Human_eye/a24ua4fy">eyes</a> caused by the presence of additional <a href="/facts/Melanin/QtGsXAm4">melanin</a>. It is an extremely common <a href="/facts/Hereditary/t0aMmRWx">hereditary</a> human characteristic and is frequently found on individuals with <a href="/facts/Dark_skin/oa2zYL9w">dark skin</a>. Periorbital hyperpigmentation is most prevalent within the 16–25 age group. </p>