Hyperpigmentation

[hy·​per·​pig·​men·​ta·​tion] noun

Definition of hyperpigmentation

: a common, usually harmless condition in which patches of skin become darker in color than the normal surrounding skin. This darkening occurs when an excess of melanin, the brown pigment that produces normal skin colour, forms deposits in the skin. Hyperpigmentation can affect people of any race and colour.

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