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This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. "Skin pigmentation" redirects here. For animal skin pigmentation, see Biological pigment. Extended Coloured family from South Africa showing some spectrum of human skin coloration Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among ...
Chameleons - Colour change signals a chameleon's physiological condition and intentions to other chameleons. [3] [4] Because chameleons are ectothermic, they change color also to regulate their body temperatures, either to a darker color to absorb light and heat to raise their temperature, or to a lighter color to reflect light and heat, thereby either stabilizing or lowering their body ...
Chromatophores in the skin of a squid. Chromatophores are cells that produce color, of which many types are pigment-containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.
Jackson was diagnosed with the skin disorder vitiligo, which results in white patches on the skin and sensitivity to sunlight. To treat the condition, he used fair-colored makeup [3] and skin-lightening prescription creams [4] [5] to cover up the uneven blotches of color caused by the illness. The creams would have further lightened his skin.
Cyanosis is the change of body tissue color to a bluish-purple hue, as a result of decrease in the amount of oxygen bound to the hemoglobin in the red blood cells of the capillary bed. [1] Cyanosis is apparent usually in the body tissues covered with thin skin, including the mucous membranes, lips, nail beds, and ear lobes. [1]
Pigmentation changes in PVA, apparent in the epidermal (outermost) skin layer, may be attributed to incontinence (leaking out) of melanin from melanocytes into the dermal skin layer below. [5] Inflammation of the skin and cutaneous tissue, common with PVA, [ 7 ] also contributes to color changes in the skin, typified by redness.
UC Medical Center emergency doctor Robert Thomas told WCPO: "If you're having skin-like color changes — your skin is turning black, purple, blue and gray, that would also be a reason to seek ...
This frog changes its skin colour to control its temperature. Further information: Temperature regulation Some frogs such as Bokermannohyla alvarengai , which basks in sunlight, lighten their skin colour when hot (and darkens when cold), making their skin reflect more heat and so avoid overheating.