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The main symptoms of constipation and bloody stool are that the frequency of defecation is obviously reduced, once every 2-3 days or longer, and the stool is irregular and hard, often accompanied by difficulty in defecation, anal bleeding, with or without defecation bleeding.

Complications of constipation and bloody stool

Among anorectal diseases, there are many diseases that cause constipation and bloody stool. How to distinguish the symptoms of constipation and bloody stool? Experts pointed out that constipation and bloody stool caused by different diseases are different.

(1) Intestinal cancer causes constipation and bloody stool. Its main symptom is bloody stool. The cancer is located in the right colon, such as ileocecum, ascending colon and hepatic flexure of colon. It is generally not easy to see obvious bleeding, mainly fecal occult blood positive. The cancer is located in the left colon, and the color of bloody stool is mostly bright red or dark red, which adheres to the surface of feces. If the amount of bleeding is not much, the blood will be black because of constipation, and the blood will be mixed with feces.

Sigmoid colon cancer often shows constipation and diarrhea alternately, with blood, pus and mucus in the stool. Rectal cancer is bloody stool or purulent stool, or mucus bloody stool with bloody secretions in stool.

(2) Intestinal polyps cause constipation and bloody stool. In particular, the symptoms of rectal polyp bleeding are mainly hematochezia, generally a small amount of intermittent bleeding, bright red in color, covered on the surface of feces, or mixed with feces, or mixed with mucus and purulent secretions. Rectal polyps often show painless hematochezia, and the amount of bleeding is generally small. When there are large polyps in the colon, it can cause intussusception, colic in the lower abdomen, aggravated constipation and bloody stool.

(3) Hemorrhoids cause constipation and bloody stool. Patients with hemorrhoids, due to anal pain during defecation, often inhibit defecation because of fear, and constipation gradually aggravates hemorrhoids to a certain extent. When the hemorrhoid nucleus is large, the hemorrhoid mucosa becomes thinner, and the dry stool block is easy to scratch the hemorrhoid mucosa when forcibly defecating, resulting in bloody stool. Bloody stool is a common symptom of internal hemorrhoids, but it is not always seen when defecation is solved. Generally, dry defecation is more common. Its characteristic is that when defecating forcibly, blood is discharged from the anus, and the amount of bleeding varies. Blood is often attached to the surface of stool, which can be blood in stool and dripping after defecation. In severe cases, the amount of bleeding is large.

(4) Anal fissure causes constipation and bloody stool. Constipation for a long time will cause anal fissure, once suffering from anal fissure, constipation will be further aggravated. When defecating forcibly, dry feces will expand the anal canal, tear the small blood vessels of the anal canal and cause bleeding. It is characterized by less bleeding, or blood on the surface of feces, or blood dripping during defecation, or blood on toilet paper after defecation. Another feature is that patients with anal fissure often have severe tearing-like anal pain, and the pain can last for a long time after defecation. Anal fissure should be considered when there is periodic severe anal pain with bloody stool caused by defecation. Diagnosis can be made by anal examination.

(5) Intussusception causes constipation and bloody stool. It is often mucus with bloody stool, jam-like, accompanied by abdominal pain, and the mass of abdominal intussusception is easy to cause intestinal obstruction.

(6) Constipation and bloody stool caused by bleeding from rectal ulcer. There is blood on the surface of stool, accompanied by pain in anal area.

As can be seen from the above, the symptoms of constipation and bloody stool are not isolated, but caused by other anorectal diseases. Therefore, experts remind patients that to treat constipation and bloody stool, we must first make clear the cause.

I hope my answer is helpful to you. Please consult me again if you have any questions. Wish you good health.