Hello,
Without examination, confirmation of a diagnosis is tough but it can be pityriasis versicolor or pityriasis alba. Pityriasis versicolor is caused by an overgrowth of a yeast fungus and are found mainly on sun
that usually resolves by adulthood. Severe cases may benefit by Psoralen plus ultraviolet light A photochemotherapy (PUVA).
For pityriasis versicolor, Selenium sulphide lotion can be applied for around 10-15 minutes, rinsed off and re-applied daily for about a week. It is less messy and preferably easy to use than the Selsun and Ketoconazole shampoos which needs to applied on the patches of affected skin after an evening bath, left to dry the whole night and washed off the next morning. For widespread or stubborn infections, itraconazole tablets have shown good results in curative aspects.