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acanthosis nigricans


Definition: an eruption of velvety, warty benign growths and hyperpigmentation on the skin of the axillae, neck, anogenital area, and groin; in adults, may be associated with internal malignancy, endocrine disorders (characterized by insulin resistance), or obesity; seen in Type 2 diabetes in adolescents; a benign hereditary type occurs in children.

[L. fr. niger, black]

See Also: pseudoacanthosis nigricans

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.