Melasma
Melasma is featured by brown or blue-grey patches on the skin, especially on faces. Many people know that pregnancy can result in melasma due to the overproduction of melanocyte-stimulating hormones, like progesterone and estrogen during gestation. However, sun exposure is another nonnegligible trigger of melasma. UV radiation can promote melanocytes producing more melanin, causing skin darkness and forming melasma.
Melasma normally gets worse during summer because of the strong UV lights. Yet, worrying too much is unnecessary as melasma is essentially harmless. These dark spots will fade after a few months by themselves and improve in winter. Just remember to limit the time spent outside and wear sun-protective clothes in summer to reduce the risk of hyperpigmentation. [7]
