Red Stool: Causes and When to Seek Medical Attention - Surgery

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Red stools?


This afternoon, after having a bowel movement, I noticed that the last segment of my stool, about six centimeters long, was red in color, ranging between bright red and dark red.
The front part of the stool appeared normal, and there was no blood or mucus when wiping the anus.
When I flushed, the water showed a faint hint of red.
I'm unsure if this indicates bleeding or something else.
Should I seek medical attention? Thank you.
Last night around 7 PM, I ate a piece of cake that had a dark red chocolate decoration (shaped like rose petals) about 2 centimeters in diameter.
I had steak for lunch yesterday, and the day before, I ate some dried red tomatoes.
Other than that, I haven't consumed any red foods.

Cc, 40~49 year old female. Ask Date: 2016/11/01

Dr. Ke Fangxu reply Surgery


Abnormal stool color is often related to dietary intake.
It is recommended to temporarily avoid such foods and monitor the stool color.
If red stools persist, it is advisable to undergo a fecal occult blood test.

Reply Date: 2016/11/01

More Info


The presence of red stool can be concerning, and it's important to understand the potential causes and when to seek medical attention. In your case, the observation of a red segment in your stool, along with the fact that there was no blood or mucus upon wiping, suggests that the red coloration may not necessarily indicate a serious condition. However, it is essential to consider various factors that could contribute to this symptom.

Firstly, the color of stool can be influenced by dietary choices. You mentioned consuming a piece of cake with dark red chocolate and eating steak and dried tomatoes. Foods that are red or dark in color can sometimes lead to a change in stool color. For instance, beets, red gelatin, and certain sauces can impart a reddish hue to the stool. The dark red chocolate you consumed could also potentially contribute to the color change, especially if it contained any food dyes.

Another possibility is that the red color could be due to the presence of blood in the stool, which can arise from various gastrointestinal issues. Bright red blood typically indicates bleeding from the lower gastrointestinal tract, such as hemorrhoids, anal fissures, or diverticular disease. Dark red or maroon stool may suggest bleeding from higher up in the gastrointestinal tract, such as the stomach or small intestine. However, in your case, since the stool was only partially red and you did not notice any blood upon wiping, this may lessen the likelihood of a significant bleeding issue.

It is also worth considering the timing of your symptoms. If the red coloration persists beyond a single occurrence or is accompanied by other symptoms such as abdominal pain, diarrhea, or changes in bowel habits, it would be prudent to seek medical attention. Additionally, if you experience any signs of significant bleeding, such as bright red blood in the toilet bowl or on toilet paper, or if you feel faint or lightheaded, you should seek immediate medical care.

In summary, while the red coloration in your stool could be attributed to dietary factors, it is essential to monitor your symptoms closely. If the red color persists, worsens, or is accompanied by other concerning symptoms, it is advisable to consult a healthcare professional for further evaluation. They may recommend tests such as a stool analysis or imaging studies to determine the underlying cause of the color change and to rule out any serious conditions. Remember, it is always better to err on the side of caution when it comes to health concerns.

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