We have an anal fissure and need to go to the hospital for immediate treatment. But what is an anal fissure? As the name suggests, "anal" refers to the anal canal, and "fissure" means a split. Simply put, an anal fissure is a crack at the end of the rectum, forming a small ulcer, which is commonly referred to as an anal fissure. The main symptom is passing bloody stools, and the bleeding is very painful. If you have this condition, you need to go to the hospital in time for treatment. Treatment options may include conservative management or surgery, depending on the case. You should visit the proctology department at general hospitals if available. If there is no specific proctology department, you can also seek treatment in departments specializing in anorectal disorders or general surgery.