Dyschromia is a common skin condition and normally harmless. It can affect skin of any color. Typically it appears on the face, hands and/or other areas of the body often exposed to the sun. You may know of it as brown and/or age spots, melasma and freckles.
Dyschromia is caused by many factors. The most common of these is built-up sun exposure from repeat sunburns or suntans. Also, sensitivity to the sun can be intensified as a side effect from some medications -- like birth control pills. It can also develop from healing wounds and minor skin infections where discoloration remains. Typically, the darker your skin, the darker the discoloration will be. Mottling is another type of dyschromia in which changes in the blood vessels produce a patchy look. Radiation therapy can also cause dyschromia.
There are creams to lighten the skin that fade dyschromia over time which treats dark spots and skin discoloration on the hand and body. Wearing broad-spectrum sunscreen is a must, as a single day spent in the sun can undo months of treatment and progress. Check out Citrix Antioxidant Sunscreen SPF 40, which uses a powerful blend of both antioxidants and sun-protectants.