Abstract. Personal hygiene is an activity in which done by someone directly and indirectly to keep his health to prevent the risk of diseases. Personal hygiene is also a factor that plays role in the occurrence of skin diseases and one of them is Pytiriasis versicolor. Pytiriasis versicolor is a superficial fungal infection caused by Malassezia furfur which is a saprophytic organism in a normal skin. Activation of M.furfur into a pathogenic form due to changes of normal flora of the skin that caused by several factors, and one of them is poor personal hygiene. A cross sectional study consist of 115 eligible student is done to determine the relationship between personal hygiene with the occurrence of Pytiriasis versicolor among students in primary school in Medan Labuhan district. Result showed that 59.8% of subject with poor personal hygiene and there is significant association betwen personal hygiene with pytiriasis versicolor (p<0.05)

Keywords: Pytiriasis versicolor, student personal hygiene