What causes mucus and blood in the last part of stool?

Oct 13, 2022 Source: Cainiu Health
Dr. Shen Yonghua
Introduction
The presence of mucus and blood in the last portion of stool may be caused by dietary factors, excessive stress, local anal injury, hemorrhoids, perianal abscess, or other conditions, and can be improved according to the specific cause. It is recommended to seek timely medical evaluation at a hospital and receive treatment under the guidance of a physician. Adjusting the diet by reducing intake of spicy and irritating foods and avoiding excessive alcohol consumption is also advised.

Blood and mucus in the last portion of stool may be caused by dietary factors, excessive stress, local anal injury, hemorrhoids, or perianal abscess, and can be improved according to the specific cause. It is recommended to seek timely medical attention and receive treatment under a doctor's guidance.

1. Dietary Factors

Consuming excessive spicy or irritating foods or drinking too much alcohol may irritate the intestinal mucosa, leading to increased intestinal secretions and minor mucosal damage. This may result in blood and mucus appearing in the final part of stool during defecation. It is recommended to adjust the diet by reducing intake of spicy and irritating foods, avoiding excessive alcohol consumption, and increasing consumption of fiber-rich vegetables and fruits.

2. Excessive Stress

Being in a state of high stress or pressure can disrupt normal intestinal motility and digestive function, causing abnormal secretion from the intestinal mucosa. Additionally, stress-induced reactions may lead to slight bleeding from intestinal blood vessels, resulting in mucus and blood in the last portion of stool. Try stress-relief techniques such as deep breathing, meditation, yoga, or listening to calming music.

3. Local Anal Injury

Straining during bowel movements or passing hard stools may cause tearing of the anal mucosa, leading to minor bleeding. Maintain regular bowel movements and prevent constipation. Increase intake of laxative foods such as bananas and honey. Avoid excessive straining during defecation and develop healthy bowel habits, including regular, scheduled bowel movements.

4. Hemorrhoids

Prolonged sitting or poor bowel habits may lead to hemorrhoids. During defecation, pressure on the affected area may damage perianal tissues and cause bleeding, which may present as mucus mixed with blood in stool. Avoid alcohol, prolonged sitting, or standing. Under a doctor’s guidance, patients may use medications such as Huajiao Pills, Huazhi Tablets, or Zhikang Tablets to manage symptoms.

5. Perianal Abscess

An abscess may form due to infection following blockage of anal glands, leading to perianal abscess disease. The persistent bacterial irritation damages the anal region, increasing rectal secretions. In severe cases, mucosal damage may occur, resulting in mucus and blood in stool. Patients should visit a hospital and follow medical advice for treatment, such as incision and drainage.

In daily life, patients should pay attention to drinking water hygiene—avoid raw water and opt for boiled or heat-treated water. Increase intake of protein-rich foods such as lean meat, eggs, and milk. Avoid cold or spicy foods. Refrain from consuming alcoholic beverages, coffee, strong tea, and other stimulating drinks.