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From the age of 40, the skin is less able to regenerate from sun exposure, and liver spots are very common in this age group, particularly in those who spend time in the sun. [7] In the overwhelming majority of cases, liver spots pose no threat and require no treatment, though they occasionally have been known to obscure the detection of skin ...
A skin biopsy may be taken to determine capillaritis of dermal vessels. [8] Capillaritis or pigmented purpura is skin condition that has brown-reddish patches on the skin, which is caused by leaky capillaries. [9] Such skin biopsies are sent to a laboratory for a pathological examination, where each biopsy is observed under a microscope. [3]
Café au lait spots, or café au lait macules, are flat, hyperpigmented birthmarks. [1] The name café au lait is French for "coffee with milk" and refers to their light-brown color. They are caused by a collection of pigment-producing melanocytes in the epidermis of the skin. [ 2 ]
The Mongolian spot is a congenital developmental condition exclusively involving the skin. The blue colour is caused by melanocytes , melanin -containing cells, that are deep under the skin. [ 6 ] Usually, as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back ), the buttocks , sides, and shoulders . [ 6 ]
A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis. Like liver spots, seborrheic keratoses are seen more often as people age. [4] The tumours (also called lesions) appear in various colours, from light tan to black.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 December 2024. "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 ...
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