Clinical Research Directory

Inclusion Criteria: 1. Age range from 6 months to 18 years old; 2. Diagnose as IPH; 3. Parents or guardians agree to treatment and sign a written informed consent form. Exclusion Criteria: 1. Individuals who are allergic to any ingredients used in leflunomide tablets; 2. Complicated with serious basic diseases (such as systemic malignant diseases, heart failure, liver and kidney failure, immune deficiency, serious infectious diseases, Lung transplantation or other patients with immediate surgical indications); 3. Patients with other lung diseases; 4. Have a history of abnormal coagulation or abnormal coagulation function in the past; 5. Clinical trial participants who have previously participated in the treatment of flumiphene; 6. Other situations where the researcher deems it inappropriate to participate in the study.