There are black spots on the stool

Black spots on the stool are usually caused by insufficient gastrointestinal function or poor eating habits. When this happens, you need to go to the hospital for diagnosis in time and then undergo some examinations. If necessary, you can do a gastroscopy to see if there are any stomach lesions. In addition, normal stools and abnormal stools both have certain characteristics. The following is a detailed introduction to the relevant knowledge.

1. What are the black spots on the stool?

It may be due to poor digestion of the stomach, eating too fast, or talking while eating and swallowing too much air. If necessary, check with gastroscopy to see if there are any lesions such as chronic gastritis.

2. Normal bowel movements

1. Judging from the color of the stool: Under normal circumstances, human feces are yellowish brown and generally cylindrical. Light brown and golden yellow stools are also normal for infants and young children. If black stools or black bloody stools with mucus appear, it is likely caused by upper gastrointestinal bleeding, that is, there is a problem with the stomach, duodenum, etc. such as duodenal ulcers, gastritis or even intestinal cancer.

2. In terms of the frequency of bowel movements: It is normal to defecate once a day or once every two to three days. It is also normal for people with different physical conditions to defecate once every four or five days. However, if you do not have a bowel movement for four or five days and experience symptoms such as difficulty in defecation and dry stools, then it is likely caused by constipation. There are many reasons for constipation. In addition to intestinal diseases, anal diseases such as hemorrhoids and anal fissures can also cause constipation.

3. In terms of stool odor: people who like to eat meat have stronger stool odor, while vegetarians have relatively lighter stool odor. People with chronic enteritis, especially those suffering from rectal cancer, will have foul-smelling stools.

3. Abnormal symptoms

1. The stool is bright red and paste-like. You may develop acute hemorrhagic necrotizing enteritis due to overeating or eating unclean food.

2. There are bright red blood drops on the surface of the stool, which are not mixed with the stool. It is common in internal hemorrhoids, external hemorrhoids and anal fissures. If there is blood on the surface of the stool and the stool becomes a flat ribbon shape, you should go to the hospital to check whether you have rectal cancer, sigmoid colon cancer, rectal ulcer and other diseases.

3. The stool is dark red like jam and contains a lot of mucus, which indicates amoebic dysentery. Ameba in stool is a parasite. Patients with bacillary dysentery also have mucus and blood in their stools, but they do not have the foul odor like the stools of patients with amoebic dysentery.

4. The stool is tarry, black and shiny, which is often caused by bleeding from esophageal, gastric and duodenal ulcers. Blood is originally red. When it enters the digestive tract, the iron in the hemoglobin in the blood combines with the sulfide in the fat to produce iron sulfide, which causes the stool to become tarry black (black stools can only appear when the amount of blood is more than 60 ml). In addition, black tarry stools may also be seen when there is bleeding from esophageal varicose aneurysms, continuous vomiting after overeating, or rupture and bleeding of blood vessels at the junction of the esophagus and gastric mucosa.

5. Grayish white stools like clay indicate that the passage of bile into the intestine is blocked. The bile has to circulate in the blood and be deposited in the skin, causing the skin to turn yellow. Gallstones, bile duct cancer, pancreatic head cancer, liver cancer, etc. are all obstacles to the flow of bile into the digestive tract. There is no bile in the digestive tract, and the stool is grayish-white clay-like.

6. The stool is red and white like snot, commonly known as red and white jelly, which is a characteristic of acute bacterial disease. It is a mixture of thick, bloody, and mucus. Patients with chronic colitis may also develop red and white frostbite.

7. White, greasy and foamy stool is often a syndrome of malabsorption. When this condition occurs in young children, it is called celiac disease in children.

8. Loose and red stools may be caused by bleeding in the colon mucosa. If it is mixed with mucus or pus, the colon mucosa should be checked for inflammation.