In the Department of Proctology, it is common to hear patients describe their symptoms, “Doctor, my anus is cramped, uncomfortable, and sometimes uncomfortably blocked”. The actual anal swelling is what kind of feeling and is caused by what kind of disease? The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. Unlike anal pain, the lighter the local distension, falling, the heavier the urgency, frequent squatting, heavy fall after the stool is still very painful, clinical is not rare. From my experience, the pain is related to various diseases of the perianal rectum, such as inflammatory stimulation, swelling stimulation, anorectal pressure increase, female gynecological disease, male prostate disease, etc., which can cause different degrees of pain, and should be carefully identified clinically. Internal hemorrhoid inflammation Because of dry stool or other reasons, the internal hemorrhoid surface mucous membrane erosion, edema, bleeding and a large number of submucous thrombus formation, in serious cases, can be prolapsed outside the anus. Patients mostly have a strong sensation of anal dysgeusia, and patients with embedded hemorrhoids also experience severe pain. Inflammation of the rectum and sinuses If chronic colitis involves the rectum, anal drop sensation can occur. Internal rectal prolapse, also known as “prolapse”, refers to the prolapse of tissue from the anus to the outside of the anus. The rectal mucosa is loosened and piled up in the rectum, but has not yet been removed outside the anus, causing a feeling of anal swelling and incomplete defecation. Intrarectal prolapse refers to the folding of the entire proximal rectal wall or simple mucosal layer into the distal intestinal cavity or anal canal during defecation, not beyond the outer edge of the anus, and persists after the fecal mass is expelled. Of course, there are other reasons 1, various inflammatory stimulation: such as bacillary dysentery, various proctitis, early rectal submucosal abscess, etc., resulting in rectal pressure; perianal diseases such as anal sinusitis, anal papillitis (i.e. anal papillomegaly edema), external hemorrhoid edema and various perianal diseases post-operative trauma stimulation, etc., resulting in increased pressure in the anal canal can cause different degrees of anal drop. 2, tumor stimulation: such as rectal cancer, prostate cancer, rectal polyps, including rectal villous adenoma pressure stimulation rectal end pressure receptors, resulting in frequent bowel movements. 3, anal stagnation pressure: long-term constipation or fecal embedment of patients, because the feces stimulate anorectal pressure receptors and feces can not be smoothly solved. 4, a variety of prolapse disease stimulation: such as repeated prolapse of internal hemorrhoids, internal hemorrhoids embedded (i.e. prolapse can not be returned after the bruising), rectal prolapse and other repeated stimulation of the anal canal and rectal end due to prolapse. 5, rectal adjacent organ disease: male prostate and rectal anus adjacent, prostatitis, prostate hypertrophy, prostate nodules, etc. will cause some anal irritation; female uterine posterior tilt, uterine fibroids, pelvic inflammatory disease, endometriosis, etc. will also appear to varying degrees of anorectal swelling. In addition, some patients may suffer from a very mild disease, but every day all the time concerned about their condition, and even panic, it is difficult to sleep, and finally the formation of anal neurosis, resulting in anal swelling abnormal, this time can be combined with some anti-anxiety drugs, of course, or by professional doctors guidance oh. The anorectal swelling can be initially identified from the duration and degree of swelling. For example, if the internal hemorrhoid is embedded, rectal tumor, or anal foreign body, the swelling is continuous and not related to defecation, and if the condition is light, the swelling is light, and vice versa. The swelling after internal hemorrhoid ligation, internal hemorrhoid injection, or other perianal surgery has an obvious surgical history, that is, it is caused by the stimulation of the trauma after surgery. In women, the presence of endometriosis should be considered if the swelling is obvious during the premenstrual period, because the displaced and shed endometrium is often located at the lowest point between the uterus and the rectum (medically known as the Douglas fossa), and with the onset of menstruation, the area becomes obviously congested, leading to swelling. In short, once there is a period of anorectal swelling, it is recommended that we do not take matters into our own hands, not to mention indifferent, but should actively look for the causes and investigate the condition, so that the disease can be prevented first.