What should I do if my anus is narrowed? One patient had a circumferential scar stenosis of the anus caused by hemorrhoid injections after treatment. As a result, a second surgery had to be performed. There are many reasons for stenosis, but what should we do when stenosis does occur? What are the clinical manifestations of anal stenosis? The clinical manifestations of anal stenosis are determined by its clinical characteristics. 1.Difficulty in defecation: Due to anal stenosis, there is a circular scar in the anus and the anus lacks elasticity, i.e., it lacks stretchability, thus making it difficult for harder or thicker stools to pass. 2.Pain: Due to the difficulty in passing stool, fissures in the anal canal are often caused when defecating, resulting in persistent dull pain. It can also be persistent and severe pain for several hours after defecation. 3.Bleeding: poor anal elasticity and bleeding due to fissures in the skin of the anal canal when feces is passed through the anus. 4.Anal itching: Increased secretion due to fissure, causing anal itching and dermatitis. 5.Shape change of stool: Anal stenosis, constipation due to difficulty in defecation, after taking laxatives, stool can become flat or thin strip, and it is not clean to feel defecation, even if the number of defecation increases, it is mostly a small amount of thin stool. 6.Anal incontinence: anal stenosis, fibrosis, scar formation, thus making the anus lose good elasticity. On the one hand, it shows as anal stenosis, on the other hand, it shows as poor anal contraction function, i.e. anal incontinence, leakage of stool or secretion. Anal dilation therapy for anal stenosis: It is suitable for mild stenosis of the anus or anal canal. Operation method: The doctor wears a finger sleeve, applies liquid paraffin wax, slowly reaches into the patient’s anus and anal canal, and gently presses into the 4 circumference of the anal canal once or twice a day, or uses a small, medium or large anus mirror and an anal dilator to dilate the anus once or twice a week. The interval is gradually extended until the stenosis dissipates and does not recur, usually 6~8 weeks, with good results. Of course, for some patients with severe stenosis, this method of self-dilation does not provide relief. Surgical treatment: 1.Anal dilation: for mild stenosis of the anus or anal canal, the patient is placed in the lateral or truncated position, with routine local disinfection and perianal infiltration anesthesia, and the skin of the anal canal and part of the sphincter are incised in the posterior midline of the anus, so that the anus is enlarged and can pass through the index finger smoothly. Covered with sterile gauze with petroleum jelly. 2.Radiation incision scar release: It is suitable for mild to moderate stenosis of the anus and anal canal. Therefore, if stenosis occurs, it is necessary to go to a regular hospital for timely medical treatment.