Pathologic Function
hyperpigmentation
hy·per·pig·men·ta·tion
Subclass of:
Pigmentation Disorders
Definitions related to hyperpigmentation:
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Abnormal darkening of the skin.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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Excessive pigmentation of the skin, usually as a result of increased epidermal or dermal melanin pigmentation, hypermelanosis. Hyperpigmentation can be localized or generalized. The condition may arise from exposure to light, chemicals or other substances, or from a primary metabolic imbalance.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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(skin hyperpigmentation) Darkening of the skin due to excessive melanin deposition. Causes include skin injuries, pregnancy, eczema, and Addison disease.NCI ThesaurusU.S. National Cancer Institute, 2021
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(hyperpigmentation of the skin) A darkening of the skin related to an increase in melanin production and deposition.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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(skin hyperpigmentation) A disorder characterized by darkening of the skin due to excessive melanin deposition.Common Terminology Criteria for Adverse EventsU.S. National Institutes of Health, 2021
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Hyperpigmentation has multiple causes and may be focal or diffuse. Most cases are due to an increase in melanin production and deposition.Merck & Co., Inc., 2020
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