
Acanthosis nigricans is a brown to black, poorly defined, velvety hyperpigmentation of the skin. It is usually found in body folds, such as the posterior and lateral folds of the neck, the armpits, groin, navel, forehead, and other areas. ==Classification== Acanthosis nigricans is conventionally divided into benign and malignant forms., although m...
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http://en.wikipedia.org/wiki/Acanthosis_nigricans

a skin condition characterized by darkened skin patches; common in people whose body is not responding correctly to the insulin that they make in their pancreas (insulin resistance). This skin condition is also seen in people who have pre-diabetes or type 2 diabetes.
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http://www.diabetes.co.uk/glossary/a.html

a skin condition characterized by darkened skin patches; common in people whose body is
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<radiology> Pre-malignant skin disorder, papillomatosis, pigmentation, hyperkeratosis, multiple filling defects in oesophagus, increased risk of carcinoma in stomach and abdomen ... (12 Dec 1998) ...
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A skin condition characterised by dark patches, common in people whose body is not responding correctly to the insulin that they make in their pancreas. This skin condition is also seen in people who have pre-diabetes or type 2 diabetes.
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http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Definitions: 1. 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 occ...
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http://www.medilexicon.com/medicaldictionary.php?t=382

Acanthosis nigricans: A skin condition characterized by dark thickened velvety patches, especially in the folds of skin in the axilla (armpit), groin and back of the neck. The condition is complex. It can occur with endocrine diseases such as Cushing disease, tumors of the pituitary, and diabetes mellitus. It is common in people who have insulin re...
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http://www.medterms.com/script/main/art.asp?articlekey=25206

A breakout of hyperpigmented plaques and warty papules in the axillae, groin, neck, and/or anogenital region. Please visit Dr. Miller’s dermatology office for this kind of treatment.
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http://www.robertmillermd.com/derma_glossary.html

[
n] - a skin disease characterized by dark wart-like patches in the body folds
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http://www.webdictionary.co.uk/definition.php?query=acanthosis%20nigricans

A skin condition characterized by darkened skin patches; common in people whose body is not responding correctly to the insulin that they make in their pancreas (insulin resistance). This skin condition is also seen in people who have prediabetes or type 2 diabetes.
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https://www.diabetes.org/resources/students/common-terms
keratosis nigricans noun a skin disease characterized by dark wartlike patches in the body folds; can be benign or malignant
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https://www.encyclo.co.uk/local/20974

An eruption of velvety, hyperpigmented plaques and warty papules in the axillae, groin, neck, and/or anogenital region.
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https://www.encyclo.co.uk/local/21553

Thickened, lichenified, seborrheic and greasy lesions which begin as small brown patches in the axilla and progresses to involve the hindlegs, chest and flanks. Most frequently seen in Dachshunds, also in Setters, Lhaso apsos, and others.
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https://www.encyclo.co.uk/local/22445

a thickening and darkening of the skin in patchy areas in the skin folds of the armpits, neck, or groin, ranging from tan to dark brown. This is usually a sign of insulin resistance.
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https://www.encyclo.co.uk/local/22808

A breakout of hyperpigmented plaques and warty papules in the axillae, groin, neck, and/or anogenital region.
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https://www.soothems.com/pages/dermatology-glossary-of-terms
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