Blood in Stool: When to Seek Medical Attention - Gastroenterology and Hepatology

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Blood in the stool?


Hello, I used to have bowel movements that were often pellet-like.
A few months ago, I experienced some anal fissures due to hard stools, but I haven't had any issues with fissures since then.
However, today when flushing the toilet, I suddenly noticed something red, resembling blood, underneath the stool.
The stool itself looked normal and intact, similar to regular bowel movements, but there was red liquid underneath.
The process of passing stool was smooth and painless.
What could be the issue? Do I need to seek further examination?

Xie Er, 10~19 year old female. Ask Date: 2015/09/10

Dr. Lin Minghui reply Gastroenterology and Hepatology


Hello, a common cause of blood in the stool is hemorrhoids.
If the bleeding persists, you may consult a colorectal specialist at the Gastroenterology Department of Taoyuan General Hospital, Ministry of Health and Welfare.
Sincerely, Dr.
Lin Ming-Hui.

Reply Date: 2015/09/10

More Info


When it comes to blood in stool, it's essential to understand the potential causes and when to seek medical attention. The presence of red liquid or blood in your stool can be concerning, and while it might not always indicate a severe issue, it is crucial to approach this symptom with caution.

From your description, it seems that you have experienced hard stools in the past, which led to anal fissures. This condition can cause bleeding, but since you mentioned that you have not had any further issues with fissures, it raises the question of whether the blood you observed is related to your previous condition or something else entirely.

Blood in the stool can originate from various sources within the gastrointestinal tract. The bright red color of the blood typically indicates that it is fresh and may be coming from the lower gastrointestinal tract, such as the rectum or anus. Common causes of blood in stool include:
1. Hemorrhoids: Swollen blood vessels in the rectal area can bleed, especially during bowel movements, leading to bright red blood on the stool or toilet paper.

2. Anal Fissures: As you have experienced, these small tears in the lining of the anus can cause bleeding, particularly when passing hard stools.

3. Diverticular Disease: Diverticulosis can lead to diverticulitis, which may cause bleeding in the lower intestine.

4. Polyps or Colorectal Cancer: While less common, polyps can bleed, and colorectal cancer is a serious condition that can present with blood in the stool.

5. Gastrointestinal Infections: Certain infections can cause inflammation and bleeding in the intestines.

Given that your stool appears normal and the bleeding is not accompanied by pain, it might be tempting to dismiss the concern. However, it is essential to monitor the situation closely. Here are some guidelines on when to seek medical attention:
- Persistent Symptoms: If you continue to see blood in your stool over several days, it is advisable to consult a healthcare professional.

- Accompanying Symptoms: If you experience additional symptoms such as abdominal pain, changes in bowel habits, weight loss, or fatigue, you should seek medical evaluation promptly.

- Severity of Bleeding: If the bleeding becomes more significant or you notice large amounts of blood, you should seek immediate medical attention.

- History of Gastrointestinal Issues: If you have a history of gastrointestinal diseases or conditions, it is prudent to discuss any new symptoms with your doctor.

In your case, since you have noticed blood for the first time after a period of hard stools, it would be wise to schedule an appointment with your healthcare provider. They may recommend a physical examination and possibly further tests, such as a colonoscopy, to rule out any serious conditions.

In summary, while occasional blood in the stool can be benign, especially if related to hemorrhoids or fissures, it is crucial to take any instance of rectal bleeding seriously. Early evaluation can help identify the cause and ensure appropriate management, reducing the risk of complications. Always trust your instincts and seek medical advice when in doubt about your health.

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