What causes rectal bleeding after drinking alcohol?
Disease description:
I had dinner with friends in the evening and drank some alcohol. After returning home, I noticed blood in my stool. Could you please explain what might cause rectal bleeding after drinking alcohol?
Doctor's answer (1)
Dr. Cheng Yicheng
Rectal bleeding after alcohol consumption may result from alcohol-induced irritation. Following alcohol intake, capillaries in the area of internal hemorrhoids dilate; during defecation, increased intra-abdominal pressure can cause these dilated capillaries to rupture, leading to rectal bleeding. Patients with hemorrhoids are advised to avoid alcohol consumption. Instead, they should consume more fresh fruits and vegetables, engage in appropriate physical exercise, maintain regular bowel movements, and perform daily warm-water sitz baths to ensure perianal hygiene.
