First you need to know what you have, if it is Tinea versicolor, also called pityriasis versicolor, it is a common fungal infection of the skin
. The fungus interferes with the normal tanning of the skin
. This results in small areas that are lighter than surrounding skin.
Antifungal creams, lotions or shampoos can help treat tinea versicolor. But even after successful treatment, skin color may remain uneven for several weeks, and the infection may return, especially in warm, humid weather.