Blood in Stool: Possible Causes and Concerns

Blood in the stool resembling menstrual blood?

After having a bowel movement, I noticed blood on the toilet paper that was similar in color and consistency to menstrual blood, and there were also traces of blood in the toilet water.
My period is due around this time, so it seemed reasonable to suspect it was menstruation; however, my period has not come at all.
My menstrual cycle is typically about 22 days, and it is now 2 days late.
I am experiencing noticeable breast tenderness, which usually indicates that my period is approaching, but I have never had issues with spotting or delayed periods before.
I would like to know what could be causing the rectal bleeding, as experiencing this three weeks in a row seems excessive, especially since I have only been menstruating for a few years.
Thank you, doctor, for your assistance in clarifying this matter.

Niming, 10~19 year old female. Ask Date: 2016/08/25

Dr. Ke Fangxu reply Surgery

At the age of 15, having an irregular menstrual cycle is quite normal.
Based on your description, it seems more like menstrual bleeding.
Hemorrhoidal bleeding usually accompanies abnormal bowel movements or prolonged time spent during defecation, and the blood is often bright red.
It is advisable to avoid constipation during this period and to shorten the time spent on the toilet.
As long as there is no further bleeding, there is no need for concern.
However, if bleeding persists, it is best to consult a physician for evaluation.

Reply Date: 2016/08/25

More Info

Blood in stool can be alarming, and it’s essential to understand the possible causes and concerns associated with this symptom. In your case, the presence of blood that resembles menstrual blood, both on toilet paper and in the toilet bowl, raises several important considerations.

Firstly, it’s crucial to differentiate between gastrointestinal bleeding and menstrual bleeding. While you mentioned that your menstrual cycle is due, the timing and nature of the blood you observed could indicate a gastrointestinal issue rather than a menstrual one. Blood in the stool can originate from various sources within the digestive tract, including the esophagus, stomach, intestines, or rectum. Common causes of blood in the stool include:
1. Hemorrhoids: Swollen blood vessels in the rectum or anus can cause bright red blood during bowel movements. This is often accompanied by pain or discomfort.

2. Anal fissures: Small tears in the lining of the anus can lead to bleeding, especially during bowel movements. This is usually associated with pain.

3. Gastrointestinal bleeding: Conditions such as diverticulosis, inflammatory bowel disease (IBD), or colorectal polyps can lead to bleeding. The blood may appear dark red or maroon, indicating it has been digested, or bright red if it’s from a lower source.

4. Infections: Certain infections can cause inflammation and bleeding in the gastrointestinal tract, leading to bloody stools.

5. Menstrual-related issues: If you are experiencing a delay in your menstrual cycle, it’s possible that hormonal changes could be affecting your body in ways that might lead to unusual bleeding patterns. However, this is less common.

Given that you have experienced this symptom for three weeks and that it is unusual for you, it is essential to seek medical attention. A healthcare provider will likely perform a thorough evaluation, which may include:
- A detailed medical history and physical examination.

- Blood tests to check for anemia or signs of infection.

- Stool tests to identify any pathogens or blood.

- Imaging studies, such as an ultrasound or CT scan, to visualize the abdominal organs.

- A colonoscopy may be recommended if there is a suspicion of a more serious underlying condition.

Additionally, the breast tenderness and delayed menstrual cycle you mentioned could indicate hormonal fluctuations, which may or may not be related to the gastrointestinal symptoms. Hormonal imbalances can sometimes lead to changes in menstrual patterns, but they do not typically cause blood in the stool.

In conclusion, while it’s understandable to suspect that the blood you observed could be related to your menstrual cycle, the persistence and nature of the bleeding warrant further investigation. It’s crucial to consult with a healthcare professional who can provide a comprehensive assessment and appropriate management. Early diagnosis and treatment are vital in addressing any potential underlying conditions and ensuring your overall health and well-being.

Similar Q&A

Blood in Stool: What You Need to Know and Do

Dear Doctor, Yesterday, I noticed blood in my stool and also found blood on the toilet paper after wiping. Could you please advise me on how to proceed? I would be very grateful.

Dr. Lin Minghui reply Gastroenterology and Hepatology
Hello, the presence of blood in the stool may be caused by hemorrhoids, anal fissures, inflammatory bowel disease, tumors, polyps, or diverticular bleeding, with hemorrhoidal bleeding being the most common. It is advisable to consume more fruits, vegetables, and fluids to maintai...

Understanding Blood in Stool: Potential Causes and Health Risks

I have recently experienced occasional blood in my stool, and there is some pain during bowel movements. If this is due to hemorrhoids, colorectal cancer, or polyps, what impact could it have on my health if I don't see a doctor? Additionally, my menstrual flow has decreased...

Dr. Hong Hongchang reply Internal Medicine
Hello, Green Winter: The most common causes of bloody stools may include hemorrhoids, polyps, enteritis, tumors, or coagulation disorders, so further examination is advisable.

Understanding Blood in Stool: Gastrointestinal Concerns and Solutions

Hello Doctor: I have been experiencing diarrhea for almost two weeks, starting three weeks ago, with a couple of instances of constipation in between. Most of my stools have been yellow and watery, accompanied by stomach discomfort, bloating, and nausea. I have visited several cl...

Dr. Cai Anshun reply Gastroenterology and Hepatology
Hello: If you are very concerned, you can consult a gastroenterologist or a colorectal specialist. Anal pain with slight bleeding is mostly caused by hemorrhoids or anal fissures. Changhua Hospital cares about your health. Dr. Tsai An-shun.

Blood in Stool: Understanding Gastrointestinal Health Concerns

I have been experiencing gastrointestinal issues for over two months. My recent health check report indicated that everything is normal except for elevated total bilirubin levels (CEA is normal). However, this afternoon, I noticed blood in my stool; the blood was separate from th...

Dr. Cai Yaozhou reply Gastroenterology and Hepatology
Blood in the stool, when accompanied by no anal pain, is mostly due to hemorrhoidal bleeding. If blood in the stool causes anal pain, it is likely due to anal fissures. Occasional blood in the stool should raise concerns about hemorrhoids first, followed by tumors (polyps or canc...