Anal foreign body sensation

　　A sensation of foreign body in the anus refers to foreign bodies swallowed, including tubes, chicken bones, and fish bones, as well as gallstones or fecal stones that can remain at the junction of the anal and rectum. Hemorrhoids, urinary tract stones, vaginal rings, or surgical sponges or instruments may erode into the rectum. Some strange or sexually related foreign bodies may be inserted artificially and unintentionally retained. Some substances are embedded in the rectal wall, and some foreign bodies adhere to the anal sphincter muscle, thus bringing a sensation to the anus.

　　1. Analitis

　　Analitis is caused by long-term fecal stimulation and poor defecation habits, such as recurrent constipation or diarrhea, which can cause inflammation in the anal area. Due to the presence of inflammation, many patients have the phenomenon of holding back stool, so it is easy to have a sensation of foreign body in the anal area.

　　2. Hemorrhoids

　　In clinical medicine, hemorrhoids are divided into three types: external hemorrhoids, internal hemorrhoids, and mixed hemorrhoids, based on the dentate line. The main symptoms of external hemorrhoids are anal prolapse, pain, and a sensation of foreign body. Especially for the connective tissue type of external hemorrhoids, there are skin flaps growing at the anal margin, gradually increasing in size, soft in texture, usually painless, without bleeding, and only a sensation of foreign body in the anal area.

　　3. Rectal prolapse

　　When the anal canal and rectal mucosal layer in the intestinal lumen become relaxed, they may accumulate due to gravity. When they have not prolapsed outside the anus, patients may experience明显的 anal prolapse pain. In addition, rectal prolapse can also cause various discomforts, such as difficulty in defecation and fecal incontinence.

　　4. Perianal abscess

　　Perianal abscesses occur subcutaneously, causing swelling around the anal area in patients. Moreover, the swelling can lead to a sensation of anal prolapse. Severe pain may occur when the abscess becomes purulent.

　　5. Rectal mucosal relaxation

　　Rectal mucosal relaxation, also known as rectal intussusception, can be divided into stages I, II, and III according to the degree of development. The main symptoms are difficulty in defecation, anal prolapse, and a feeling of foreign body in the anus.

　　6. Hemorrhoidal papillae hypertrophy

　　Hemorrhoidal papillae hypertrophy is a benign disease, commonly manifested as white papillary tumors at the anal canal, which are hard and often occur in multiple locations. Hemorrhoidal papillitis mainly manifests as a feeling of foreign body sensation in the anus, with the prolapse of papillae during defecation as the papillae proliferate and hypertrophy. Small papillae can return to the anus by themselves after defecation, while large ones need to be pushed back into the anus manually. If they are not复位 in time, they can cause anal edema and pain.

　　Foreign body sensation in the anus is prone to cause diseases such as anemia, pain, hemorrhoid prolapse, and anal itching.

　　1. Cause anemia:Bleeding during or after defecation, bright red in color, sometimes with a small amount of blood on the surface of the stool, or the toilet paper is stained red, or it may be dripping or spurting blood. This is due to the abrasion of the mucosa by feces, or due to excessive force during defecation, increasing the pressure in the blood vessels, causing the varicose veins to rupture. If there is persistent and repeated bleeding, or multiple large-scale bleeding, it can also cause anemia.

　　2. Anal pain:Simple internal hemorrhoids generally do not cause pain, and sometimes only a feeling of anal prolapse or difficulty in defecation is felt. If the prolapse is not复位 in time, the pain will worsen; if there is an incarcerated hemorrhoid with ulceration and necrosis, it can cause inflammation and edema of the anal margin, resulting in severe pain.

　　3. Hemorrhoid prolapse:Due to the increase in the size of hemorrhoids, when defecating, they are compressed by feces, causing them to gradually separate from the muscular layer and prolapse outside the anus. Sometimes, 1-2 hemorrhoids may prolapse simultaneously, or all hemorrhoids may prolapse with the rectal mucosa. Initially, they can be复位 themselves after defecation, but for those with more severe symptoms, they need to be pushed back manually or rest in bed to复位; in more severe cases, besides prolapsing during defecation, they may prolapse during any forceful action, walking, coughing, sneezing, squatting, etc.

　　4. Mucus discharge:The long-term stimulation of the rectal mucosa by hemorrhoids causes an increase in secretions; in the late stage of internal hemorrhoids, due to the relaxation of the anal sphincter, there is often secretion flowing out of the anus. Mild cases may have secretion during defecation, while severe cases may naturally flow out without defecation, soiling the underwear, causing great inconvenience to the patient. Moreover, when the internal hemorrhoids prolapse, more secretions are produced.

　　5. Anal itching:Due to the stimulation of secretions or prolapsed hemorrhoids, the anus and perianal area become moist and unclean, leading to eczema and itching. Sometimes, itching is caused by the prolapse of internal hemorrhoids due to reflex action.

　　Sudden severe pain during defecation should be suspected of having a penetrating foreign body, which just stays at the anal-rectal junction or above. Other symptoms depend on the size and shape of the foreign body, the duration of its stay in place, and whether there is infection or perforation.

　　Foreign bodies usually stay in the middle segment of the rectum, where they cannot pass through the anterior flexion angle of the rectum. The foreign body can be felt during digital rectal examination. It may be necessary to perform abdominal and chest X-ray examinations to rule out perforation in the abdominal rectum.

　　The daily prevention of foreign body sensation in the anus should pay attention to the following contents:

　　1. Maintain optimism:Maintain a good attitude towards stress, combine work and rest, and do not overwork. It can be seen that stress is an important trigger of cancer. Traditional Chinese medicine believes that stress leads to overwork and physical weakness, which causes a decrease in immune function, endocrine disorders, and internal metabolism disorders, leading to the deposition of acidic substances in the body; stress can also lead to mental tension, causing Qi stagnation and blood stasis, internal fire, and other symptoms.

　　2. Regular life:Live a regular life, and people with irregular living habits, such as staying up late to sing karaoke, play Mahjong, not returning home at night, and irregular life, will aggravate the acidification of the physique and are prone to intestinal polyps. Good living habits should be cultivated to maintain an alkaline constitution, so that cell proliferation and mutation diseases can be kept away from oneself.

　　3. Good living habits:Develop good living habits, quit smoking and limit alcohol. Smoking, according to the World Health Organization's prediction, if people stop smoking, the world's cancer will decrease by 1/3 in 5 years; secondly, do not drink excessively. Cigarettes and alcohol are extremely acidic substances. People who smoke and drink for a long time are prone to acidic constitution.

　　4. Light diet:Do not eat too much salty and spicy food, and do not eat overheated or cold food.

　　Foreign bodies in the anal canal usually stop at the middle segment of the rectum. The foreign body cannot pass through the angle of flexion of the rectum in that place. The foreign body can be touched during digital rectal examination. It may be necessary to perform abdominal and chest X-ray examinations to rule out perforation in the abdominal and rectal cavities.

　　Patients with the sensation of foreign body in the anal canal should develop good living habits, quit smoking and limit alcohol. Smoking, according to the World Health Organization's prediction, if people stop smoking, the world's cancer will decrease by 1/3 in 5 years; secondly, do not drink excessively. Cigarettes and alcohol are extremely acidic substances. People who smoke and drink for a long time are prone to acidic constitution. It is advisable to have a light diet, do not eat too much salty and spicy food, and do not eat overheated or cold food.

　　The sensation of foreign body in the anal canal should be treated according to the etiology. At the same time, good living habits should be maintained, and good living habits should be cultivated. Quit smoking and limit alcohol. Cigarettes and alcohol are extremely acidic substances. People who smoke and drink for a long time are prone to acidic constitution. The diet should be light, and it is not advisable to eat too much salty and spicy food. Do not eat overheated or cold food. Participate in physical exercise regularly to enhance physical fitness.