What does it mean when a male has blood in his stool when defecating?
Disease description:
My boyfriend said he has been constipated lately and often passes blood in his stool, but he hasn't paid much attention to it. I would like to ask, what could be the reason for passing blood during bowel movements?
Doctor's answer (1)
Dr. Shen Yonghua
Rectal bleeding in males can be caused by various diseases. Below are some possible causes:
1. Hemorrhoids: One of the most common causes, both internal and external hemorrhoids can lead to rectal bleeding, often accompanied by anal discomfort, pain, or itching.
2. Anal fissure: Often caused by the passage of hard stool that injures the anal mucosa, resulting in severe pain, especially during defecation.
3. Colorectal polyps or cancer: Abnormal growths in the colon may cause bleeding. Early stages may be asymptomatic, but as the condition progresses, symptoms such as blood in the stool, abdominal pain, and weight loss may occur.
4. Inflammatory bowel disease: Such as Crohn's disease or ulcerative colitis, characterized by chronic, recurrent intestinal inflammation that can cause diarrhea, abdominal pain, and blood in the stool.
5. Infections: Bacterial, viral, or parasitic infections can also cause blood in the stool, often accompanied by fever, diarrhea, and other symptoms.
6. Vascular abnormalities: Such as angiodysplasia or hereditary hemorrhagic telangiectasia, which can lead to gastrointestinal bleeding.
If such symptoms occur, it is recommended to seek medical attention promptly for evaluation.
