A cluster randomized controlled trial of Uyghur medicine combined with carpotriol ointment in the treatment of mild to moderate psoriasis vulgaris

INTERVENTION: Uyghur medicine group:Uyghur medicine;Combined treatment group:Uyghur medicine and carpotriol ointment; CONDITION: psoriasis vulgaris PRIMARY OUTCOME: psoriasis area and severity index,PASI; SECONDARY OUTCOME: Uyghur Medical Syndrome Score;Post effect of 18 weeks;Dermatology Life Quality Index, DLQI;Affected area of body surface,BSA; INCLUSION CRITERIA: (1) Patients with mild to moderate psoriasis vulgaris according to the diagnostic criteria. (2) PASI score<10 points, BSA<10%, DLQI<10 points. (3) According to the analysis of Uyghur medicine differentiation, patients with psoriasis vulgaris who meet the diagnosis of salty mucus. (4) Age range from 18 to 65 years old. (5) Informed consent, voluntary testing