What's wrong with diarrhea and anal bleeding

Diarrhea can lead to many consequences, the most common of which is anal bleeding. There are many reasons that lead to diarrhea, such as eating the wrong food, catching a cold, etc., and there are also many reasons that lead to anal bleeding, including some anal diseases. The symptoms of different reasons are actually somewhat different. So what is the cause of anal bleeding due to diarrhea?

Anal bleeding is the most common anorectal disease, which is caused by the following anorectal diseases: internal hemorrhoid bleeding. Bleeding from anal fissure. Rectal tumor. Proctitis. Chronic eczema and inflammation of the anal area. Intestinal perforation, anal papilla hypertrophy and other gastrointestinal bleeding can also cause anal bleeding.

Bleeding during bowel movements is common and frightening for people with anorectal diseases. There are many reasons for anal blood in the stool according to medical theory. The anal blood in the stool suddenly appears bright red, or covers the surface of the stool, or is mixed with the stool. There is also blood dripping or even spurting from the anus, or there is blood just on the toilet paper.

Blood in the stool may be caused by small intestinal lesions, but more often it is bleeding in the sigmoid colon and rectum. In terms of the nature of the lesion, tumors, inflammation, deformities, etc. can all cause bloody stools. The brighter the red, the closer the bleeding site is to the anus.

The occurrence of bloody stools in middle-aged and elderly people, especially those with recent onset, should be taken more seriously than in young people. This is because with age, the number of neoplastic lesions (both benign and malignant) in the sigmoid colon and rectum increases significantly.

Hemorrhoids: If you have external hemorrhoids, you can feel a soft nodule at the anus, but you cannot feel internal hemorrhoids. The amount of bleeding is heavy and not mixed with the stool. Sometimes there is only blood stain on the toilet paper. The bleeding is often related to dry stool or excessive force during defecation.

Rectal and colon cancer: These diseases have increased significantly in recent years, and the incidence rate has increased by 2-3 times. At the beginning of the disease, a small amount of blood can be seen covering the surface of the stool. As the disease progresses, the amount of blood in the stool gradually increases, the stool may become thinner, and even intestinal obstruction may occur (no bowel movement, no flatulence, vomiting, abdominal masses, abdominal pain). The stool may have a special odor produced by pus, mucus and cancerous tissue. When systemic symptoms appear, such as decreased appetite, weight loss, edema, anemia, etc., the disease is already in the late stage.

Ulcerative colitis: The blood may be bright or dark in color, and almost every stool is mixed with blood and pus. There are often abdominal pain and diarrhea, which may recur or persist for a long time.

Colorectal polyps: Some are benign, while others are prone to malignant transformation (such as adenomatous polyps and villous adenomas). The incidence rate increases with age and may occur singly or multiple times. Blood in the stool is often intermittent and bright red in color. Generally, the amount of blood is not large and the blood is not mixed with the stool. There are no special changes in the stool itself.

Colonic vascular dysplasia: more common in middle-aged and elderly people, bleeding is mostly fresh blood, the amount of bleeding is large, and there is no change in the stool itself.