There is no concept of fire in Western medicine. Bright red blood in the stool, indicating that the location of bleeding is close to the anus, common causes are hemorrhoids, anal fissure, colorectal cancer or polyps, intestinal vascular disease and so on.
1. Hemorrhoids: hemorrhoids, especially internal hemorrhoids, the surface mucous membrane is easy to bleed by dry and hard fecal friction, so hemorrhoids are mainly manifested as intermittent blood after stool.
2. Anal fissure: Anal fissure is a longitudinal ulcer formed after the skin layer below the dentate line of the anal canal is torn, mostly seen in young people. When defecating, the expansion of anal canal will easily cause the ulcerated area to tear and bleed again, accompanied by severe pain during defecation, but the amount of bleeding caused by anal fissure is often small.
3. Colorectal cancer or polyp: colorectal cancer or polyp can also cause blood in stool when it breaks down. Tumor is mostly manifested as mucus and pus blood in stool, and a large amount of bright red blood in stool is relatively rare; polyp is mostly manifested as fresh blood on the surface of stool.
4. Intestinal vascular diseases: including intestinal vascular malformation, capillary dilatation, hemangioma, etc., these diseases cause intestinal vascular rupture can form persistent bleeding, manifested as a large amount of fresh blood in stool.
In addition, constipation, coagulation disorders such as hemophilia, thrombocytopenic purpura and other diseases may also appear in the blood in the stool bright red symptoms. Therefore, it is recommended to go to the hospital as soon as possible to find out the cause of such symptoms and treat them accordingly.