Tinea versicolor (also known as pityriasis versicolor) is a fungal infection that causes a skin rash. The rash is formed by many small spots that typically appear on the upper body, usually on the chest, neck, and upper arms. The spots are flat and may be white, pink, red, tan, brown, purple, or gray-black. The spots and patches may be lighter or darker than the rest of the skin.

In children, the face is usually involved.