hyperpigmentation

noun

hy·​per·​pig·​men·​ta·​tion ˌhī-pər-ˌpig-mən-ˈtā-shən How to pronounce hyperpigmentation (audio)
-ˌmen-
: excess pigmentation in a bodily part or tissue (such as the skin)
Vitamin C has been reported to inhibit the production of melanin, the stuff that produces not only a tan but also freckles and hyperpigmentation.Anne Weintraub
The presence of nickel can cause a skin rash that leads to hyperpigmentation, or darkening, of the skin.Jenyne M. Raines
hyperpigmented adjective
hyperpigmented skin

Examples of hyperpigmentation in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That’s not the case with this gentle toner from Renee Rouleau, which calls on antioxidant elderberry to neutralize free radicals (unstable molecules that can damage cells and contribute to aging), fight hyperpigmentation, and help promote collagen production. Esme Benjamin, PEOPLE, 4 Sep. 2025 Darker or lighter patches of skin after the rash fades, called post-inflammatory hyperpigmentation (PIH). Leslie Baumann, Miami Herald, 4 Sep. 2025 Topicals focuses on chronic skin conditions like eczema and hyperpigmentation—issues that disproportionately affect people with melanin-rich skin. Isaac Mizrahi, Forbes.com, 27 Aug. 2025 Talk to your dermatologist about your risk for hypopigmentation (light spots) and hyperpigmentation, and whether or not these changes could be permanent. Sherri Gordon, Health, 27 Aug. 2025 See All Example Sentences for hyperpigmentation

Word History

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of hyperpigmentation was in 1866

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Cite this Entry

“Hyperpigmentation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperpigmentation. Accessed 11 Sep. 2025.

Medical Definition

hyperpigmentation

noun
hy·​per·​pig·​men·​ta·​tion -ˌpig-mən-ˈtā-shən, -ˌmen- How to pronounce hyperpigmentation (audio)
: excess pigmentation in a body part or tissue (as the skin)
hyperpigmentation of deep inflammatory acne lesionsElizabeth A. Abel et al.
hyperpigmented adjective
hyperpigmented skin
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