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Abstract
Purpose: the purpose of the current study was to investigate the effect of polarized light therapy (PLT) in the Treatment of psoriasis. Subjects: thirty patients were included in this study. Their ages ranged from 25 to60 years. Each patient was divided into two sides Procedures: group (I) received PLT with a specific energy density of 40 mW cm. The light is brought and applied to the required area at constant intensity and very low energy but it is constant at 2.4 joule cm2 per min in addition to topical corticosteroids for 4 weeks, 3days/week. group (II) received 4 weeks of treatment with topical corticosteroids only (0.05% clobetasol propionate ointment two times per day) while. The measurements were done before the study and after one month of treatment for all groups by using Ulrasonography and wound surface area tools. Results: of this study showed reduction in the thickness of skin and wound surface area after the treatment for group (A), and (B) with a percentage of 45.83%, 21.73%, respectively for the thickness of skin and 44.24%, 26.28 %, respectively for psoriasis surface area. There was a highly significant difference between two groups after the treatment. It was observed that PLT was more effective. Conclusion: It could be concluded that. The use of Polarized light therapy (PLT) is considered as an effective method in treatment of psoriasis