Tinea Versicolor is a fungal infection of the skin. It's is caused by a type of yeast that naturally lives on your skin. Tinea versicolor (also known as Dermatomycosis furfuracea, Pityriasis versicolor, and Tinea flava) is a condition characterized by a rash on the trunk and proximal extremities.
Recent research has shown that the majority of Tinea versicolor is caused by the Malassezia globosa fungus, although Malassezia furfur is responsible for a small number of cases. These yeasts are normally found on the human skin and only become troublesome under certain circumstances, such as a warm and humid environment, although the exact conditions that cause initiation of the disease process are poorly understood.