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Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin.The blue colour is caused by melanocytes, melanin-containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. [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.
Hyperpigmentation can be diffuse or focal, affecting such areas as the face and the back of the hands. Melanin is produced by melanocytes at the lower layer of the epidermis. Melanin is a class of pigment responsible for producing color in the body in places such as the eyes, skin, and hair.
Over 90% of adults pick their noses, and many people end up eating those boogers.. But it turns out snacking on snot is a bad idea. Boogers trap invading viruses and bacteria before they can enter ...
A beauty mark or beauty spot is a euphemism for a type of dark facial mark so named because such birthmarks are sometimes considered an attractive feature. [1] Medically, such "beauty marks" are generally melanocytic nevus, more specifically the compound variant. Moles of this type may also be located elsewhere on the body, and may also be ...
Such cells might then aggregate into a spot with an irregular shape. [13] They propose that the protrusion of a flat spot is a result of the death of aged cells in the spot and release of lipofuscin bodies. [13] The aggregating cells would form a capsule, and the dense lipofuscin bodies make the protruding spot soft and dark in color. [13]
This discoloration, black spots on the carapace, chelae, or legs, is the result of melanisation; a defense response to the deterioration of the cuticle. [3] Black nodules have also been observed on the gills, heart, and hepatopancreas of affected individuals, and the presence of the disease is associated with accumulation of material in the ...
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