Tinea versicolor-tinea versicolor is a superficial yeast infection caused by pityrosporum ovale. superficial scaling patches occur primarily on the chest and trunk, but may involve the head and limbs. lesions can be a variety of colors and may be pruritic. these lesion do not tan. a koh preparation shows short hyphae mixed with spores (chopped spaghetti and meatballs.) tineas versicolor is treated with selenium sulfide shampoo, imidazole creams, or oral ketoconazole, but the recurrence rate is 15-50%.