Anal pain, extraordinary, experienced by people often only quiet pain, this place is difficult to get to the top of the list. Anal pain is a very embarrassing existence, and fidgeting, and pain, there are tear-like, cut-like, crushing pain, burning pain, swelling pain, spasmodic cramps. Pain during defecation, persistent pain, intermittent pain, the flavor, only their own experience. Many people have wonder why this is happening, so what exactly is making you fidget?$ 1, anal fissure caused by anal pain is the most common Acute anal fissure only pain during defecation, tearing or cut-like. Obsolete anal fissure periodic pain, pain during defecation, after relief, half an hour to start swelling and throbbing pain, lasting more than a few hours. Accompanied by discharge of bright red blood and constipation.$ 2, hemorrhoids cause anal pain internal hemorrhoids embedded, distension, burning pain, preferred in the 3, 4 stage usually will have prolapse of internal hemorrhoids, internal hemorrhoids prolapse outside, mucous membrane breakage, bleeding, necrosis. Thrombosed external hemorrhoids, distending pain or tingling, light foreign body sensation, mostly due to stool exertion, perianal venous blood vessel breakage, blood clot coagulation subcutaneous thrombus, the anus is now greenish-purple round hard lump. Inflammatory external hemorrhoids, swelling, burning pain, anal side of the confined mass, hard texture, tenderness obvious. Mostly due to exertion, anal fissure or surgical stimulation occurs.$ 3, perianal infection – paranal abscess and anal fistula anal pain Anal crypt infection, inflammation spread to the surrounding, initial itching and pain, pus when swelling, crushing pain, chicken-pecking-like pain. Perianal subcutaneous abscess and sciatico-rectal fossa abscess are low level abscesses with lumps on the body surface, redness, swelling, heat and pain; pelvic rectal fossa abscess, posterior rectal hiatus abscess and other high level abscesses, which are manifested as rectal swelling and distension, the feeling of incomplete defecation, and the systemic symptoms are obvious and there is high fever. Most of the abscesses will form anal fistula in the later stage, and the external opening of the fistula is inflamed and swollen, or reinfection occurs with perianal abscess.$ 4, sinusitis caused anal pain Inflammation of the anal sinus to the anal part of the micro-pain, burning pain, swelling, such as sphincter stimulation contracture, pain intensification, and to the buttocks and thigh roots, tailbone radiation. Occasionally accompanied by a small amount of purulent or mucus secretion overflow from the anus, can cause perianal moisture, itching and other discomforts. The condition of sinusitis is recurrent and psychological changes occur.$ 5, anal neurosis Mental trauma or misinformation or had a local pain stimulation, resulting in cerebral cortex dysfunction, vegetative nerve dysfunction, local nerve dysfunction, anorectal sensory abnormalities. The anal symptoms are bizarre, complaining of the sensation of wind blowing, bugs crawling, foreign body sensation and so on. There are no abnormal signs on specialized examination. Symptoms vary and worsen with mood swings.$ 6, functional anorectal pain Chronic functional anorectal pain is often burnt dull pain, electric shock-like, or performance of the rectum increased pressure, prolonged sitting and lying down when aggravated, lasting a few hours to a few days. Chronic or recurrent. Spasmodic anorectal pain, a sudden sharp pain in the anal area that lasts for a few seconds or minutes and then disappears completely. Occurring in the middle of the night, the attack time is not regular, can be a few days or a few years within an attack. 7, anal foreign body injury pain pain persistent, traumatic foreign body residue, or improper diet, will be fish splinters, bone fragments, kernels, etc. embedded in the anorectal tube caused by removing the foreign body, pain relief. If the retention time is too long, it will cause local infection. Postoperative pain after anorectal surgery, pain during trauma recovery for about 10 days. Inflammatory bowel disease, anal swelling, accompanied by increased frequency of stool, mixed with mucus, with blood in stool. Anorectal cancer mass, painless in the early stage, after the mass increases in size and breaks down, there is anal drop, hidden pain, with change of bowel habit, pus and blood stool, abdominal distension, abdominal pain, and loss of weight. There are other diseases, such as gynecological diseases, prostate diseases, presacral cysts and so on may also lead to anal pain.