Anal fissures are caused by fissures of the anal skin caused by constipation and too much straining of the bowels, and repeated infections with evil toxins resulting in poor local qi and blood flow in the anal canal and loss of nutrition in the wound. Therefore, Chinese medicine advocates that the bowels should be kept open, and the anal fissure can be treated with drugs that clear heat and moisten the intestines and topically clear heat and detoxify the muscles and close the mouth. What are the symptoms of ulcerative anal fissure? Painful defecation: Generally speaking, pain is one of the main symptoms of ulcerative anal fissure, the pain is sometimes severe in the erosion of the fissure, sometimes it is persistently severe and can continue to intensify, and can be relieved automatically after a few hours. This painful symptom occurs during defecation, other than the following squatting and sitting lines. Anal itching: Due to the secretion from the ulcerated surface of the fissure or subcutaneous fistula, or the secretion from the anal glands, which stimulates the skin of the anal margin, causing anal eczema and anal itching. The anus is often damp and unpleasant, and the skin can be accompanied by superficial fissures or skin lesions. Constipation: Constipation is a symptom of anal fissure and one of the causes of anal fissure. Mostly due to the patient’s fear of severe pain during defecation, intentionally delay the time and number of defecation, so that the feces in the rectum stay longer, water is completely absorbed, the stool becomes dry and hard, and defecation at this time, it will make the fissure trauma aggravated, the fissure deepened, the pain increased. So on and so forth, forming a vicious circle. Fourth, blood in the stool: when defecation, damage to the trauma, can cause fissure bleeding. Generally, the bleeding is not much, but the stool is stained with blood, or the blood drips after the stool, and the hand paper carries blood. In addition, the surface of the ulcerated fissure may sometimes have blood stains overflowing. V. Systemic symptoms: Intense pain can increase the mental burden of patients and affect rest, causing neurasthenia. Some patients will be afraid of defecation, intentionally reduce the amount of food, over time, can cause mild anemia and malnutrition. Women may experience irregular menstruation and pain in the lumbar and sacral areas. Fever, swelling and pain, and pus and blood may occur during the infected phase of ulcerative anal fissure.