Many people have experienced bloody stools. Generally speaking, having blood in the stool is just a symptom, not a disease. The causes of bloody stool are worth paying attention to. Generally speaking, a lot of bloody stool is caused by constipation, but it can also be caused by intestinal diseases, and the symptoms of bloody stool vary depending on the cause. Next, let's learn about the reasons for bloody stool?
1. Hemorrhoids: Hemorrhoids and mixed hemorrhoids in different stages can cause bleeding in the stool. Blood in the stool usually occurs during or after defecation, in the form of droplets or sprays, with a bright red color and no mixing of blood and stool. External hemorrhoids generally do not cause fecal bleeding. The amount of bleeding from hemorrhoids varies, with mild cases being only fecal bleeding, and severe cases bleeding several milliliters to over ten milliliters each time; Patients with mild hemorrhoids experience intermittent fecal bleeding, while those with severe hemorrhoids inevitably bleed during each bowel movement; If pregnant women eat spicy food, bleeding will be more severe.
2. Upper respiratory tract bleeding: black or brownish black stool, also known as tarry stool, is one of the most common symptoms of upper gastrointestinal bleeding. The main manifestation of upper gastrointestinal bleeding is black stool, often accompanied by other symptoms and signs such as vomiting blood, palpitations, fatigue, anemia, etc. If the amount of bleeding is small and the speed is slow, and the blood stays in the intestine for a long time, the stool discharged due to the action of intestinal fluid will be black; If there is a large amount of bleeding and a short residence time in the intestine, the discharged blood will appear dark red; The amount of bleeding is particularly large, and it can also appear bright red when quickly expelled.
3. Anal fissure: The stool caused by anal fissure is bloody, with a bright red color, and there are bloodstains after dripping or wiping with paper. There is also severe pain in the anus after defecation.
4. Rectal and colon polyps: blood red, slight pain, blood not mixed with stool.
5. Ulcerative colitis: bleeding mixed with mucus or presenting as purulent stools, accompanied by abdominal pain, fever, frequent bowel movements, etc.
6. Rectal cancer: red or dark red in color, attached to the surface of the stool in droplets; Late stage often presents with purulent stools accompanied by symptoms such as anal and rectal prolapse, weight loss, and changes in bowel habits.
