There are a variety of factors which may lead to the darkening of skin or hyperp
Hyperpigmentation
Hyperpigmentation is a patch that looks darker than your natural skin tone due to overproduction of the compound melanin.
Skin Disorders
Several skin disorders may cause the darkening of skin, resulting in blotches and the skin becoming thicker.
Vitamin Deficiency
Deficiency of essential vitamins such as vitamin A, E, C, and B complex may result in darkening and roughening of the skin.
Hormonal Changes
Hormonal changes otherwise and during pregnancy may also cause skin darkening.
Exposure To UV Rays
During winter, basking in the sun causes the skin to become tanned. Even direct sun exposure leads to more dark-pigmented patches.
Treatment
There are several ways to prevent skin darkening throughout the winter. You can avoid direct sun exposure, apply moisturisers before going outside, drink enough water and avoid fatty foods.
These are some causes of darkening of skin. Try to stay away from certain food items to prevent skin discoloration. Consult a physician if the condition worsens or causes any other major problems.