Background: Polycystic ovary syndrome is a hormonal disorder that is common among females of reproductive age. Hyperandrogenism in PCOS often manifests itself with the cosmetically disfiguring problems of acne. Bioptron Light Therapy proved efficacy in treatment of selective skin disorders. Purpose: This study was conducted to determine the effect of Polarized Light therapy on acne vulgaris in women suffering from polycystic ovarian syndrome. Method: Forty participants diagnosed as having PCOS, suffer from inflammatory acne in face for more than 3 months aged from 20 to 35 years and their BMI ranged from 30 to 35 Kg/m2 were selected randomly from the outpatient clinics of Gynecology at kasr El Einy Hospitals. They were divided randomly into two groups equal in number: control group (group A) (n= 20) received topical retenoid once daily, doxicyclin 100 mg and topical peroxide twice daily for 4 weeks and study group (group B) (n= 20) received the same medical treatment as in group (A) in addition to Polarized Light Therapy 3 times per week for 30 minutes/session for 4 weeks. Evaluation of acne for participants in both groups (A&B) was done before the beginning and after the end of the study using photographs and Investigator's Global Assessment (IGA) scale for acne. Results: Showed that there were a statistically significant difference between both groups (A&B) in median value of IGA and number of acne lesion post treatment. There was a statistical significant decrease in the median value of IGA post-treatment favoring group (B) with (P= 0.27). Also, there was a statistical significant decrease in the median value of number of acne favoring group (B) with percentage of improvement of 85% in group (B) rather than 20% in group (A). Conclusion: It could be concluded thatthe application of polarized light therapy was effective in treatment of acne vulgaris and its application with medical treatment was more effective than using medical treatment alone in management of acne in PCOS women.
