We all have yeast living on our skin. When they grow out of control, a person can get a skin disease called tinea versicolor, also called pityriasis versicolor.
Your dermatologist may tell you that you have a fungal infection on your skin. Yeast is a type of fungus.
Many people get tinea versicolor. It is one of the most common skin diseases in tropical and subtropical areas of the world. People who live in tropical areas may have tinea versicolor year-round.