Tinea versicolor, also called pityriasis versicolor, is a common skin infection caused by the overgrowth of a yeast. Typically, it presents as patchy areas of lighter or darker discoloration on the trunk and shoulders that can be scaly in appearance. It can affect anyone, but is more common in teens and young adults. Though the condition can be easily treated with topical and/or oral antifungals, the discoloration can persist for months despite treatment. Recurrence during the warm and hot months of the year is also very common.