What is melasma?
Melasma is a skin condition characterized by brown or bluish-gray patches (resembling freckles).
It is formed due to the overproduction of the cells that give the skin its color. It mainly appears on the face - in some clinical cases it involves the neck, back and shoulders.
The fact is that it appears in any part of the body that is exposed to the sun, that is, the rays are exposed most often. That is why people with this diagnosis notice that the symptoms are much more severe in the summer, and the condition improves in the winter.
Melasma is also known as the "mask of pregnancy" and it really lives up to this nickname, as it is often observed in pregnant women.
It is considered to be a chronic disorder, which means that it lasts for a long time (3 months or more). Some people have melasma for only a few years, while others have it for life. In some clinical cases, it is formed only during pregnancy, for a short time.
This condition of the skin is harmless - a person does not suffer from pain, itching.
Source:
https://my.clevelandclinic.org/health/diseases/21454-melasma