An anal foreign body sensation is a discomfort caused by non-human tissue or tissue out of place that irritates the sensitive rectum, anal canal and perianal area. Anal foreign body sensation can be what disease? 1, anal canal inflammation Anal canal inflammation is caused by long-term fecal stimulation and poor defecation habits, such as repeated constipation or repeated diarrhea can cause inflammation of the anal canal area. Because of the presence of inflammation, many patients have the phenomenon of holding back stool, so it is easy to appear anal foreign body sensation. 2, hemorrhoids Clinical medicine to the dental line as the boundary of the hemorrhoids are divided into external hemorrhoids, internal hemorrhoids, mixed hemorrhoids three, of which the main symptoms of external hemorrhoids for anal swelling, pain, foreign body sensation. Especially connective tissue type external hemorrhoids, the anal edge of the redundant skin flap, gradually increase, soft texture, generally no pain, no bleeding, only feel foreign body sensation in the anus. 3, perianal abscess When perianal abscess occurs subcutaneously, there will be lumps around the patient’s anus. And the lump will make the anus have a feeling of falling. When the lump becomes pus the patient will have severe pain. 4, rectal prolapse When the mucous membrane layer of the anal canal and rectum in the intestinal cavity is loose, it will be piled up due to the influence of gravity. When not prolapsed out of the anus, patients will have obvious anal pain. In addition, rectal prolapse will also cause all kinds of inconvenience, such as defecation difficulties, fecal incontinence and other symptoms. 5, rectal mucosal relaxation Rectal mucosal relaxation is also called rectal prolapse, according to the degree of development can be divided into stage I, II, III, the symptoms are mainly difficult to defecate, anal swelling, anus has a foreign body sensation and so on. 6, anal papillae hypertrophy Anal papillae hypertrophy is a benign disease, often manifested as white papillary swellings at the anal canal, harder, often more frequent. Anal papillitis is mainly manifested as usually feel a foreign body sensation in the anus, with the papillae hyperplasia and hypertrophy, the papillae can be detached from the anus during defecation. Small papillae can return to the anus by themselves after defecation, and large ones need to be pushed back to the anus by hand. If not timely reset, can cause anal edema, swelling and pain. There are many causes of anal foreign body sensation, and different causes correspond to different anorectal diseases, so patients should not blindly use drugs or prescriptions, so as not to aggravate the condition, inducing more serious complications. So in the phenomenon of foreign body sensation in the anus, timely selection of regular professional hospitals for treatment, do not because of neglect and delay the best time for treatment of anorectal diseases.