freckle

Also known as fleckles, pjege

Freckles are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion. Freckles do not have an increased number of the melanin-producing cells, or melanocytes, but instead have melanocytes that overproduce melanin granules (melanosomes) changing the coloration of the outer skin cells (keratinocytes). As such, freckles are different from lentigines and moles, which are caused by accumulation of melanocytes in a small area. Freckles can appear on all types of skin tones. Of the six Fitzpatrick skin types, they are most common on skin tones 1 and 2

AI overview

Freckles are small spots on the skin caused by melanocytes (pigment-producing cells) that overproduce melanin, making them most visible on fair skin. They differ from moles and lentigines because they don't involve an increased number of melanocytes, just an overproduction of pigment in existing cells.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Medical condition (new).name: Freckle
Medical condition (new).synonyms: Ephelides, ephelis
Medical condition (new).image: Vesnuschki.jpg
Medical condition (new).caption: Slight facial freckles on a child
Medical condition (new).field: Dermatology

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Wikidata facts

Image: Vesnuschki.jpg

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Commons category: Freckles
ICPC 2 ID: S08

Sources (2)

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Article

7 sections

Contents

Biology
Genetics
Types
In culture
See also
References
External links

==Biology== The formation of freckles is caused by exposure to sunlight. The exposure to UV-B radiation activates melanocytes to increase melanin production, which can cause freckles to become darker and more visible. This means that one who has never developed freckles may develop them suddenly following extended exposure to sunlight.