Effect of Narrow Band Ultraviolet B Therapy versus Methotrexate on Serum Levels of Interleukin-17 and Interleukin-23 in Egyptian Patients with Severe Psoriasis.

However, a highly significant decrease in the PASI score of both groups was noted after the eight week lasting therapy, as patients in group I attained a 53% reduction in their PASI score with a mean ± SD of 15.4 ± 1.2 and patients in group II attained a 60% reduction in their PASI score with a mean ± SD of 16.8 ± 1.1 ( P value < 0.05) for both groups.

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