Pityriasis versicolor, also known as tinea versicolor, is a common chronic superficial fungal skin infection of the upper trunk, neck, and upper arms caused by the organism Mallassezia furfur. It is characterized by patches of lighter or darker skin and is caused by a type of yeast (fungus) that is found on normal skin. The condition is caused by Malassezia species, notably M. globosa, M. furfur, and M. sympodialis.
There are a number of effective treatments for pityriasis versicolor, including creams, lotions, and shampoos that contain antifungals (substances that kill the fungus or inhibit its growth) . The active ingredient in these medicines is often selenium sulfide, ketoconazole, or pyrithione zinc. Medicated cleansers can also be used to prevent the yeast from overgrowing again.
There are no specific positive or negative effects of the treatments for pityriasis versicolor mentioned in the search results. However, it is important to note that using medicated cleansers once or twice a month, especially during warm and humid periods, can prevent the yeast from overgrowing again.
The ingredients or materials used in the treatments for pityriasis versicolor include antifungal substances such as selenium sulfide, ketoconazole, or pyrithione zinc. FDA-approved medications for pityriasis versicolor include ketoconazole, selenium sulfide, clotrimazole, miconazole, and econazole. Medications not approved by the FDA for treatment of pityriasis versicolor include a variety of antibiotics, corticosteroids, antiviral medications, and pain medications.
