Pityriasis versicolor is a harmless fungal infection that causes patches of discoloured skin.
The main symptom of pityriasis versicolor is patches of skin that may be lighter or darker than your normal skin.
Pityriasis versicolor is caused by a yeast (fungus) that lives on most people's skin. It's not caused by poor hygiene and cannot spread to others.
Pityriasis versicolor can be treated with antifungal shampoos, creams and tablets.
Page last reviewed: 12/07/2018
Next review due: 12/07/2021