Objectives of Study:
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1. To evaluate the clinical efficacy and safety of Guben Huayu Decoction Combined with methotrexate in the treatment of moderate to severe psoriasis;
2. To explain the synergetic mechanism of the optimal scheme of integrated traditional Chinese and Western medicine through multi omics research;
3. At the same time, explore the expectations of patients for the treatment plan of integrated traditional Chinese and Western medicine and the experience of participating in this study, so as to guide clinical practice.
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Exclusion criteria:
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1. Pregnant or lactating women, or those who plan pregnancy during the study period;
2. Patients with SAS score > 50 or SDS standard score > 53, or with other mental disorders;
3. Patients with severe primary diseases such as respiratory system and circulatory system that cannot be controlled by conventional medication; patients with severe infection, tuberculosis, hepatitis and other infectious history, lymphocyte proliferation, hematopoietic system abnormalities, tumor; patients with severe water, electrolyte and acid-base balance disorder; patients with primary or secondary immune deficiency and hypersensitivity. Or clinical test indicators are one of the following cases: alanine aminotransferase or glutamic oxaloacetic transaminase increase > 1.5 times the upper limit of normal value; creatinine is higher than 1.5 times of the upper limit of normal value; liver fibrosis (p3np) > 2 times of the upper limit of normal value; HIV serological test is positive; any of the main blood routine indicators is lower than the lower limit of normal value; or other abnormal laboratory tests are judged by researchers Patients who are not suitable for this trial;
4. Patients who are known to be allergic to the drugs used in this study and those with related drug ingredients;
5. Patients with head and face lesions;
6. Those who are participating in other drug clinical trials or have participated in other clinical trials within 12 weeks;
7. Those who used traditional Chinese medicine or Chinese herbal products or topical therapy (antibiotics, external corticosteroids, vitamin D3 analogues, calcineurin inhibitors, keratolytics, et al) within 2 weeks; those who had used oral systemic therapies (methotrexate, ciclosporin A, acitretin, fumarates, et al) or ultraviolet treatment within 4 weeks; those who had received biological agents within 5 half-life periods (17.5 days of Etanercept, 50 days of Infliximab, 70 days of Adalimumab, 105 days of Ustekinumab, 135 days of Secukinumab, et al);
8. The cumulative dose of MTX used in the past was more than 1.5g;
9. Patients considered unsuitable for inclusion by the researchers.
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