pigmentation

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pigmentation

 [pig″men-ta´shun]
the deposition of coloring matter; the coloration or discoloration of a part by a pigment.

pig·men·ta·tion

(pig'men-tā'shŭn),
Coloration, either normal or pathologic, of the skin or tissues resulting from a deposit of pigment.

pigmentation

(pĭg′mən-tā′shən)
n. Biology
1. Coloration of tissues by pigment.
2. Deposition of pigment by cells.

pig·men·ta·tion

(pig'mĕn-tā'shŭn)
Coloration, either normal or pathologic, of the skin or tissues resulting from a deposit of pigment.

pigmentation

Coloration of any part of the body, especially the skin. Normal pigmentation of skin, hair and eyes is occasioned by the presence of melanin-a brown or black pigment produced by cells called melanocytes. Abnormal pigmentation may occur from local or general loss of melanin. ALBINISM is caused by a general deficiency of melanin. Other causes of abnormal pigmentation include skin disease, pregnancy (see CHLOASMA), ADDISON'S DISEASE, CUSHING'S SYNDROME, JAUNDICE and HAEMOCHROMATOSIS.
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