Blood in Stool: Causes and Concerns for Your Health - Surgery

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Rectal bleeding


Hello Dr.
Chen, recently I have noticed blood around my stool every time I have a bowel movement, but it is not particularly bright red, and there are no blood traces when I wipe.
I am very concerned that this might be colon cancer, as I have never experienced this before.
However, I wonder if it could be related to my irregular schedule due to a recent family member's passing.
Additionally, my menstrual period should have started by now, but it hasn't.
I have heard that incomplete shedding of the endometrium can also cause blood in the stool.
Could you please provide some clarification on this?

Judy, 10~19 year old female. Ask Date: 2017/07/25

Dr. Chen Jiaming reply Surgery


"There is a pool of blood around the stool, but it is not particularly bright red, and there are no blood traces when wiping." Given this description, it is advisable to consult a gastroenterologist or a colorectal surgeon for an examination.
Additionally, the impact of a family member's passing, whether due to emotional distress or changes in routine, can lead to menstrual irregularities or missed periods.
As for the endometrium not shedding completely, that could cause blood in the stool, but this situation does not apply here.

Reply Date: 2017/07/25

More Info


Understanding blood in stool can be a concerning issue, and it's important to approach it with a clear understanding of potential causes and necessary actions. The presence of blood in your stool can arise from various sources within the gastrointestinal (GI) tract, and while it can be alarming, not all causes are indicative of severe conditions like colorectal cancer.

Firstly, the color and consistency of the blood can provide clues about its origin. Bright red blood typically suggests that the bleeding is occurring in the lower GI tract, such as the rectum or anus, while darker blood may indicate bleeding from higher up in the digestive system, such as the stomach or small intestine. In your case, you mentioned that the blood is not particularly bright red and that there are no blood traces when wiping, which may suggest that the bleeding could be minor or related to a less severe issue.

Common causes of blood in the stool include hemorrhoids, anal fissures, diverticular disease, and gastrointestinal infections. Hemorrhoids, for instance, are swollen veins in the rectal area that can bleed, especially during bowel movements. Anal fissures, which are small tears in the lining of the anus, can also lead to blood in the stool, often accompanied by pain during bowel movements. Diverticulosis, a condition where small pouches form in the colon wall, can lead to diverticulitis, which may cause bleeding.

Regarding your concern about colorectal cancer, while it is a possibility, especially if you have risk factors such as a family history of the disease, age over 50, or other symptoms like unexplained weight loss, changes in bowel habits, or abdominal pain, it is essential to remember that many other conditions can cause similar symptoms. A thorough evaluation by a healthcare professional is crucial to determine the exact cause of your symptoms.

You also mentioned that your menstrual cycle is irregular and that you have heard about the possibility of endometrial tissue affecting bowel movements. While it is true that conditions like endometriosis can lead to gastrointestinal symptoms, including blood in the stool, this is less common. If you suspect that your menstrual irregularities are related to your gastrointestinal symptoms, it would be wise to discuss this with both a gynecologist and a gastroenterologist.

Given the complexity of your symptoms, I recommend the following steps:
1. Consult a Healthcare Provider: Schedule an appointment with your primary care physician or a gastroenterologist. They may recommend tests such as a colonoscopy to visualize the colon and identify any abnormalities.

2. Keep a Symptom Diary: Document any additional symptoms you experience, such as changes in bowel habits, abdominal pain, weight loss, or any other unusual signs. This information can help your doctor make a more accurate diagnosis.

3. Consider Stress Factors: You mentioned that a family member recently passed away, which can lead to significant emotional stress and changes in lifestyle. Stress can affect your digestive system, potentially leading to issues like irritable bowel syndrome (IBS), which may cause changes in bowel habits and even blood in the stool.

4. Monitor Your Menstrual Cycle: If your period is significantly delayed or irregular, consider discussing this with a gynecologist. Hormonal imbalances can affect both your menstrual cycle and gastrointestinal health.

In conclusion, while blood in the stool can be a sign of a serious condition, many benign causes exist. It is crucial to seek medical advice to rule out serious conditions and to receive appropriate treatment for any underlying issues. Your health is paramount, and addressing these symptoms with a healthcare professional will provide you with the clarity and care you need.

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