Evaluating the Safety and Efficacy of Lactobacillus Plantarum in Treating Psoriasis: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial

Intervention measures for the experimental group: Apply 5ml of Lactobacillus plantarum solution extracted from the skin surface of healthy individuals to the psoriatic lesions daily, for a duration of 2 months.

Intervention measures for the control group: Apply 5ml of inactivated Lactobacillus plantarum solution to the psoriatic lesions daily, for a duration of 2 months.