Brown patches of pigmentation as a result are the visible result of a
locally circumscribed overproduction and accumulation of the pigment
melanin, which is responsible for skin color. Melanin pigment-forming
cells of the skin, the melanocytes formed and passed on to the
surrounding skin cells. The strength of melanin formation is both
hereditary and determined by the age of the people and depends on
various environmental conditions (eg the UV rays of the sun), or
inflammation or irritation of the skin.
• Sun exposure:
An
overabundance of sunlight caused not only premature skin aging but also
pigment irregularities. Certain substances called photosensitizers
(perfumes, certain medications, St. John's wort), pimples, boils,
abscesses, burns, surgery, laser treatments and sclerotherapy for
varicose veins increase the risk pied hyperpigmented skin areas.
• Age:
From
the 40th Age occur in clusters in the melanin formation of
irregularities. With inadequate protection, the so-called liver spots
increase in number, size and intensity with age.
• Pregnancy / Birth control pill / hormone replacement treatments:
Hormonal
changes, eg during pregnancy, and estrogen treatments also favor the
occurrence of pregnancy hyperpigmented areas of the face patches
(chloasma, melasma =). The skin areas where the brown stains occur most
often are the cheeks, forehead, upper lip and chin area, which is of
smaller individual patches to all the areas mentioned anything is
possible.