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Pityriasis versicolor (PV) is a common skin condition associated with Malassezia species. Factors influencing PV development, such as sebum and skin hydration levels, are not fully understood, especially among adolescents. This study aimed to determine Malassezia speciation and assess sebum and hydration levels in secondary school students with PV in Ibadan, Nigeria. A cross-sectional study was conducted among secondary school students with PV and a control group. Sebum and hydration levels were measured using a sebumeter and corneometer, respectively. Malassezia speciation was determined through KOH microscopy and PCR-RFLP. Sebum levels were significantly higher in PV patients compared to controls. Skin hydration was lower in PV patients. Malassezia globosa was the predominant species, followed by Malassezia restricta and Malassezia sympodialis. No significant correlations were found between Malassezia species and clinical features. Increased sebum levels and decreased skin hydration are associated with PV in adolescents. Malassezia globosa is the primary species involved. Further research is needed to elucidate the complex relationship between these factors and PV pathogenesis. Clinical trial number Not applicable.
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