Hyper pigmentation refers to appearance of dark spots on the skin when there is excess production of melanin. It usually leads to black or brown patches and an uneven skin tone. It might be caused by overexposure to sun, inflammation or due to skin injuries. Hyper pigmentation can either be focal or diffuse and face and back of hands are most commonly affected by it.

The most common type of hyper pigmentation is age spot, caused by radiation of the sun. Another common type of the skin condition is melasma, which affects pregnant women.

A dermatologist may examine the dark spots on the skin and recommend a treatment. Possible treatment methods include skin peeling, application of dry ice, and laser application. Over the counter medications such as skin lighteners can help in removing excess melanin and slowing down melanin production.