Open all pages about Pityriasis versicolor
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.
Page last reviewed: 12/07/2018
Next review due: 12/07/2021