1.What is anal fissure? Anal fissure is a common anal canal and anal disease, which is a pike fissure or longitudinal ulcer formed by rupture of the skin of the anal canal below the dentate line, characterized by periodic anal pain. How do I know I have an anal fissure? (1) The typical clinical manifestations of acute anal fissures are periodic anal pain, blood in the stool and constipation. (2) In addition to the above symptoms, patients with chronic anal fissures also have the triad of anal fissures often referred to by anorectal surgeons: anal papillomegaly, sentinel hemorrhoids (connective tissue external hemorrhoids) and old anal fissures. 3.What should I do if I have an anal fissure? If you experience any of the above symptoms, please consult a specialist immediately. Conservative treatment is recommended for acute fissures. For chronic fissures, surgical treatment is recommended. 4.Why do I suffer from anal fissure? Long-term constipation: It can cause changes in the time and volume of bowel movements, resulting in tears in the distal rectum and anal canal. Long-term chronic, intermittent diarrhea: can reduce the diameter of the anal canal, and subsequent defecation can cause fissures. Prefer spicy, fried and other food easy to make the anus long-term bad stimulation and fissure. 5, suffering from anal fissures do not be afraid, there are the following prevention methods: the key to preventing anal fissures is to solve constipation. The patient should develop the habit of defecating every day. Diet: A reasonable diet can help to ensure smooth bowel movements, with more fresh fruits, vegetables and coarse fiber foods, less or no spicy and stimulating food, and more water. Pay attention to hygiene: keep the anal area hygienic, wash the anus in time after the stool, bathe regularly and change underwear regularly, which can effectively prevent infection. Insist on sitting in the bath: use 1:5000 potassium permanganate warm water to sit in the bath before and after the stool, the warm water is 43℃～46℃, 2~3 times a day, 20~30 minutes each time.