Causes of stool bleeding

Adults have sticky bloody stools, accompanied by lower abdominal pain, frequent stools and other symptoms, which are usually caused by ulcerative colitis. Nine diseases that cause hematochezia: 1. Hemorrhoids, anal fissure and anal fistula are generally bright red in color, which is not mixed with feces and does not contain mucus. It is characterized by dripping blood after defecation, especially when it is hard to stool. 2. Bacillary dysentery stools are often purulent, with a small amount at a time, often accompanied by a sense of urgency; The chronic stage is intermittent mucus and purulent bloody stool. 3. Amoebic dysentery is mostly jam-like, or dark red, with a large amount, often accompanied by purulent mucus. Most patients have fever, abdominal distension, abdominal pain and acute diarrhea. 4. Schistosomiasis has a history of contact with epidemic water, often manifested as chronic diarrhea, pus-like stool or bloody stool. 5. Ulcerative colitis stool is generally mucus purulent bloody stool, and in severe cases it can be bloody watery stool. 6. Intussusception discharges mucus and bloody stools, often without stools. 7. Rectal cancer 8. The possibility of colon cancer should be suspected when the stool becomes thinner and the stool is accompanied by mucus and pus. 9. When the rectum, colon polyp rectum, sigmoid colon or descending colon polyp, it shows that fresh blood is attached to the stool.

These people should be on guard against bloody stool

Young people should be on guard against bloody stool. Patients with rectal cancer tend to be younger, and the proportion of patients younger than 3 years old has increased from 8% 1 years ago to 15%. With the increase of age, the malignant lesions (including benign and malignant) of sigmoid colon and rectum in human body increase obviously.

Edit the characteristics of hematochezia caused by hemorrhoids in this paragraph

1. The amount of bleeding. How much is different, the light is only stool bleeding, and the heavy one bleeds several milliliters to more than ten milliliters at a time. 2. Bleeding frequency. The light person has intermittent stool bleeding, and the heavy person will inevitably bleed every time he defecates. 3. Timing of bleeding. When the feces are dry and hard or eat irritating foods such as peppers, it is most likely to occur or aggravate. 4. Bleeding mode. Generally, blood is attached to feces or blood drops after defecation. 5. Local inspection. Visually, hemorrhoids (tumors) may or may not prolapse outside the anus. 6. Anoscopy. Expand or pull the hook to open the anus, and it can be seen that there are hemorrhoids of different sizes above and below the dentate line.

Edit the color analysis of stool bleeding in this paragraph

First, bloody stool

is mostly instant bleeding, and the blood flows out of the blood vessel for a short time and then [1] passes through the anus and is discharged with feces, or directly flows out after defecation. The appearance of the blood is similar to traumatic bleeding, and the color is bright red or purple red and dark red, which can solidify into blood clots after a little time. Blood is often caused by the following diseases: 1. Hemorrhoids: Internal hemorrhoids and mixed hemorrhoids in all stages can cause bleeding in the stool, which is usually blood in the stool or blood after defecation. External hemorrhoids generally have no stool bleeding. 2, rectal polyps: painless stool bleeding. Bleeding during defecation stops after defecation, and the amount varies. Generally, blood is not mixed with feces, or polyps are high and numerous, or feces can be mixed. 3, rectal prolapse: after a long illness, there may be bleeding during defecation. 4. Anal fissure: bloody stool. The way of bleeding is that there is blood on one side of the stool surface, which is not mixed with feces, and some patients drop blood after defecation. In order to determine whether the above diseases are the cause of hematochezia, the diagnosis can be made by electronic anorectal mirror. At present, some hospitals use imported high-definition anorectal endoscope (such as the anorectal surgery center of the first branch of the 39 Hospital of Beijing People's Liberation Army), which can enlarge the focus several times and effectively find the cause of hematochezia.

2. Purulent bloody stool

That is, there are both pus and blood in the discharged feces, and the blood is thin in appearance and sometimes contains a lot of mucus. Purulent bloody stool or bloody stool containing mucus is often found in tumors and inflammation in the rectum or colon. The following are several common diseases: 1. Rectal cancer: the blood color is fresh or dark red, and there may be mucus in the feces, which is often mixed with blood, mucus and feces. 2, colon cancer: with the extension of the course of disease, stool bleeding gradually appears, mostly bloody stools containing pus or mucus, and the blood color is dark. 3, ulcerative colitis: mucus stool or purulent bloody stool, accompanied by left lower abdominal pain or lower abdominal pain.

Third, black stool

means that the stool is black or brownish black, also known as cypress oil stool, which is one of the most common symptoms of upper gastrointestinal bleeding. Upper gastrointestinal bleeding is mainly manifested as melena, often accompanied by hematemesis, palpitation, fatigue, anemia and other symptoms and signs. If the amount of bleeding is small and the speed is slow, the blood stays in the intestine for a long time, and the stool discharged due to the action of intestinal fluid is black; If the amount of bleeding is large and the retention time in the intestine is short, the discharged blood is dark red; The amount of bleeding is particularly large, and it can be bright red when it is discharged soon.

Fourth, occult blood stool

A small amount of gastrointestinal bleeding does not cause the color change of stool, but only when the stool occult blood test is positive, it is called occult blood stool. All diseases that cause gastrointestinal bleeding can cause occult bloody stools, such as gastric ulcer and gastric cancer. Fecal occult blood test can detect a small amount of blood components in stool. Repeated and persistent occult blood tests are positive, suggesting chronic gastrointestinal bleeding, which should be further checked to be alert to the existence of gastrointestinal tumors. When normal people avoid eating animal blood and food containing chlorophyll, occult blood test is negative. This experiment is quick, simple and painless. In order to improve the probability of detecting blood in stool, stool samples can be collected many times.