Have you ever experienced severe pain during a bowel movement and blood on the toilet paper? Anyone who has ever felt a sudden stinging pain in the anus during a bowel movement and cringed has had this experience more than once, right? This is the result of anal fissure, which is usually caused by a hard, thick stool that cracks the anus. Generally speaking, the anus is 2-3 cm in diameter, but sometimes it is stretched as thick as a beer bottle. Excessively hard stool can tear the skin below the dentate line of the anal exit in one go when it is expelled. As mentioned earlier, the anus below the dentate line has a somatic nerve passing through it that is sensitive to pain, and when there is a wound here, the patient will feel great pain. This is the most likely case of anal fissure, especially in young women who have constipation. The majority of anal fissures can be treated early and properly without forming ulcers. During defecation, the anus feels like it has split open all at once. Once the anus is injured, the wound expands a little each time you pass a dry, hard stool, and the pain is so intense that it can make people cry. Therefore, many people are afraid to go to the toilet, but if they are forced not to defecate at this time, constipation will get worse, which will aggravate the anal fissure, and the pain will become more intense, and they will further hate going to the toilet, which will create a vicious circle. Compared to pain, bleeding is relatively small in the case of anal fissures, at most blood on the stool paper, but it increases when combined with internal hemorrhoids. Located below the dentate line, the pain is severe and anal fissures are mostly seen in women. Because women are shy to come to the hospital, hospital statistics are higher for men than women. However, in reality, patients with hemorrhoids and anal fistulas are significantly more common in men, while patients with anal fissures are more common in women. For the acute stage of anal fissures, sitz baths can be used to clean and heat the anus and reduce pain. In the early stage of anal fissure, it is easily cured by adjusting bowel movements and keeping the anus locally clean. Repeated constipation can cause the initial anal fissure to develop into an anal fissure, but it can still be cured at home by paying attention to preventing constipation, resting quietly after defecation, and keeping the area warm. Anal fissures are small wounds in the anus that most people experience. Anal fissures are similar to knife wounds, with little bleeding, mostly blood on hand paper and vertical streaks of blood attached to the stool strip. When such a condition first appears, it can heal in as little as two or three days or as long as a week even without special bead treatment, but with continued constipation, repeated wound dehiscence, inability to keep the wound quiet, combined with pain, and unclean stool wipes, the wound can easily become infected. With few blood vessels in the anal skin, the wound is difficult to treat if it does not heal over time. A typical anal fissure is very painful every time you have a bowel movement, but it is completely treatable at home. Treatment starts with softening the stool, drinking more water, and eating more fiber-rich foods; second, frequent showers and sitz baths to keep the wound clean and warm; and finally, inserting suppositories in the anus. In addition, people with dry stools often fissure in the same location, and attention should be paid to continue softening the stool after healing. If the anal fissure worsens and the fissure deepens, a complicated anal fissure is formed. Anal fissures are easily treated, but if they are left untreated and develop into complicated anal fissures, the pain will worsen. The reason for the deterioration of anal fissures to complex anal fissures is that they are not treated in a timely manner, so that after years or decades the condition often worsens, and there are many such patients. Complex anal fissures cannot be cured just by life therapy of relieving constipation, and they can lead to anal stenosis, which must be treated surgically. As the fissure progresses, the wound fibrosis and contraction make the diameter of the anus smaller. In some cases, the anus is so small that it can barely pass through an index finger. Even if the stool is not hard, this can cause the anal fissure to further deteriorate, forming a vicious circle. Surgery is necessary to break the vicious circle, so be prepared to stay in the hospital for a week to 10 days when you are admitted. The post-operative effect is remarkable, and patients are surprised to find that they can defecate smoothly, which is a rare event for decades. 1, prevention and control of constipation to soften the stool is most important, you can not just eat easily digestible food, you should drink more water, eat more fiber-rich foods such as oranges, apples, kelp, taro, carrots. 2, bath, sitz bath to keep the affected area clean. Take a bath and put hot water in the tub.