where do brown spots on the skin come from?

where do brown spots on the skin come from?
where do brown spots on the skin come from?

Senile lentigo, or senescence spot, is characterized by small spots 1 to 3 mm in diameter, most often rounded in shape, and brown in color.

They tend to sit on the face, forearms and especially on the backs of the hands. Concretely, it is a skin hyperpigmentation, flat or slightly raised, due to a significant increase in melanocytes.

In other words, cells responsible for the production of melanin, the pigment that gives the skin its color.

Areas of skin exposed to the sun

Neckline, face, forearms, backs of the hands… these spots therefore appear most often in areas of the skin that have been or are still exposed to the sun.

Most often observed after the age of fifty, lentigo characterizes so-called “photoaged” skin. In other words, senile lentigo is a sign of overexposure to the sun which has accelerated skin aging.

Pollution too?

It is also an important factor in skin aging. A study carried out on 400 Chinese women showed that the occurrence of senile lentigo – particularly on the back of the hands and cheeks – was up to 2.8 times higher in the group exposed to fine particles than in the group not exposed to fine particles. exposed.

What support ?

Certain approaches can be proposed against senile lentigo, considered potentially unsightly, or even difficult for certain people to cope with. Let us quote:

  • Laser treatment;
  • cryotherapy, based on liquid nitrogen;
  • peels which consist of applying an exfoliating substance to the skin – particularly on the face – with the aim of regenerating the cells of the epidermis;
  • dermabrasion which is a kind of sanding of the skin;
  • depigmenting treatments based on vitamin C. They are likely to reduce these sun-related brown spots.

The downside? Very often, the spots end up recurring… In any case, if you are concerned and wish to get rid of them, seek the advice of your doctor.

Which, if necessary, can request that of a dermatologist. Finally, of course, in terms of prevention, limit your exposure to the sun!

Sources: Mélanie Thomas. Dry skin and skin aging: clinic, aggravating factors and cosmetic responses. Pharmaceutical sciences. 2020. ffhal-03298126 – Dictionary of the National Academy of Medicine – Situm M, Bulat V, Buljan M, Puljiz Z, Situm V, Bolanca Z. Senile lentigo–cosmetic or medical issue of the elderly population. Coll Antropol. 2010 Apr;34 Suppl 2:85-8. PMID: 21302707.-

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