Fake blood in stool: caused by food or drugs There is fake blood in stool? That’s right! Fake blood in the stool is caused by eating certain foods and medications that can cause the stool to change color. For example, after taking iron supplements, tonics, herbs, or eating foods such as pork liver, animal blood, tomatoes, or beets, the stool can be dark brown, black, or red. Sometimes bleeding in the mouth or nasal cavity after swallowing can also cause a change in stool color.
These are all pseudo blood in stool, and even if they occur, there is nothing to worry about. The bloody stool will disappear after stopping the medication and food.
Real blood in the stool: a sign of intestinal disease Real blood in the stool refers to blood coming out of the anus, blood in the stool, or all blood in the stool, bright red, dark red or tarry in color. The color of the blood in the stool depends on the location of the bleeding in the digestive tract, the amount of bleeding and the time the blood stays in the intestine.
1, hemorrhoids: external hemorrhoids and mixed hemorrhoids in all periods can cause bleeding in the stool, usually with fresh blood in the stool or dripping blood after the stool, external hemorrhoids generally no bleeding in the stool.
2, intestinal polyps: painless fecal bleeding, bleeding during defecation, stop after defecation, the amount varies, generally blood does not mix with the stool, or polyp location high, the number of polyps, can also be mixed with the stool.
3, rectal prolapse: anal swelling repeatedly prolapses, and bleeding during defecation may occur after a long period of illness.
4.Anal fissure: bleeding in the form of blood attached to one side of the stool surface, not mixed with stool, and some patients drip blood after stool.
Pus and blood, mucus stools: beware of intestinal tumors. There is both pus (mucus) and blood in the stools that are excreted. Pus (mucus) blood stool is often seen in the rectum or colon tumors and inflammatory diseases.
The following diseases are common: 1, rectal cancer: blood color is fresh or dark red, mucus may be present in the stool, often mixed with blood, mucus and stool, and may be accompanied by discomfort such as thinning of the stool, abnormal increase in the number of stools, and a sense of incomplete defecation.
2.Colon cancer: the first symptom can be stool bleeding (especially tumors of the left hemicolectomy), mostly bloody stool of pus or mucus, darker in color, accompanied by abdominal mass, abdominal pain, chronic progressive wasting and other symptoms.
3, ulcerative colitis: longer history, recurrent episodes of mucus stools or pus and blood stools, accompanied by left lower abdominal pain or lower abdominal pain.
4, intestinal infectious diseases: such as bacterial dysentery, amoebic enteropathy, etc.
Latent blood stools are more frightening Small amounts (trace) of GI bleeding do not cause a change in stool color, and are only positive on the stool occult blood test, called occult blood stools. Occult blood stools can occur in all diseases that cause GI bleeding, commonly ulcers, inflammation and tumors. The stool occult blood test detects a small (trace) amount of blood in the stool.
Regular fecal occult blood testing is an important way to screen for colorectal tumors (primary screening).