Crohn’s disease can only be clinically diagnosed after a colonoscopy and after diseases such as intestinal tuberculosis and lymphoma have been ruled out. For Crohn’s disease, as far as I know, there is no drug that can completely cure it. The drug commonly used in China is Salve, which can control it temporarily. However, there is a drug produced in the United States, which is an antibody to TNF-a (domestic trade name Inversix), which is available in some areas of China and can control the disease for a long time.