Bright Red Blood in Stool: When to Seek Medical Attention? - Surgery

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Rectal bleeding


The bowel movements are normal and the diet is also normal, but there is a significant amount of bright red blood flowing into the toilet when using the restroom.
During wiping, there is particularly a lot of bright red blood for the first two times, requiring several pieces of toilet paper to clean up.
The stool appears to be attached to the blood, and when it drops into the toilet, it does not appear mixed but has blood clots.
There is a feeling of a hard lump when pressing on the left side of the abdomen.
Should I see a doctor?

Wang, 20~29 year old female. Ask Date: 2016/03/21

Dr. Cai Xingzhi reply Surgery


You're welcome!

Reply Date: 2016/03/21

More Info


Bright red blood in the stool can be alarming and is often a sign that something is wrong in the gastrointestinal tract. The presence of bright red blood typically indicates that the bleeding is occurring in the lower part of the digestive system, such as the rectum or anus. This can be caused by a variety of conditions, some of which may require immediate medical attention.

Given your description of the symptoms—bright red blood flowing into the toilet, significant amounts of blood when wiping, and the presence of a hard lump in the left abdomen—it is essential to seek medical attention as soon as possible. Here are some potential causes of your symptoms:
1. Hemorrhoids: Swollen blood vessels in the rectum or anus can cause bright red blood during bowel movements. Hemorrhoids can be internal or external, and while they can be uncomfortable, they are often manageable with lifestyle changes and over-the-counter treatments.

2. Anal Fissures: These are small tears in the lining of the anus, often caused by passing hard stools. They can lead to bleeding and significant pain during bowel movements.

3. Diverticular Disease: Diverticulosis involves the formation of small pouches in the colon wall, which can become inflamed or infected (diverticulitis), leading to bleeding.

4. Colorectal Polyps or Cancer: Polyps are growths on the lining of the colon or rectum that can bleed. Some polyps can develop into cancer over time, so it is crucial to have them evaluated.

5. Gastrointestinal Infections: Certain infections can cause inflammation and bleeding in the intestines, leading to blood in the stool.

6. Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease or ulcerative colitis can cause inflammation and bleeding in the gastrointestinal tract.

7. Other Causes: Less commonly, conditions such as vascular malformations or gastrointestinal tumors can lead to bleeding.

Given that you also mentioned a hard lump in your left abdomen, this could indicate an underlying issue that requires further investigation. It is crucial to have a healthcare professional evaluate your symptoms, as they may recommend diagnostic tests such as a colonoscopy, imaging studies, or blood tests to determine the cause of the bleeding.

In summary, the presence of bright red blood in your stool, especially in conjunction with abdominal discomfort and a hard lump, warrants immediate medical evaluation. Do not delay in seeking care, as early diagnosis and treatment can significantly improve outcomes and address any potentially serious conditions.

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Dr. Ke Fangxu reply Surgery
This situation likely indicates a higher possibility of hemorrhoidal bleeding. As long as there is no further bleeding, it should not be a concern. It is recommended to avoid constipation during this period and to shorten the time spent on bowel movements. Warm sitz baths may als...

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Last week, I went out to eat a lot of food on the 14th, 15th, and 16th. I felt like my stomach was quite full during that time. I had spicy food on the 13th and 15th, but I did not have a bowel movement on the 14th or 15th (I don't quite remember the 13th). On the last day, ...


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A 20-year-old young adult may experience hemorrhoidal bleeding, which typically resolves on its own within two to three days. However, if the bleeding persists for more than a week or is accompanied by changes in bowel habits, it is important to seek medical attention promptly to...

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Although the probability of developing colorectal cancer at the age of 22 is not zero, it is generally very low. Based on your description, it seems more like hemorrhoidal bleeding. It is recommended to start with a light diet and maintain a good lifestyle. Spicy, irritating, and...

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The presence of bright red blood in the stool, along with the stool being pellet-like, but no blood on the toilet paper, raises concerns that could be related to several conditions. While it is important to consider the possibility of hemorrhoids, which can cause bright red blood...


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