Green Diarrhea with Mucus and Blood: What to Do? - Gastroenterology and Hepatology

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Green diarrhea with mucus and blood?


Hello Doctor: I am currently abroad and it's inconvenient for me to see a doctor, so I'm seeking advice online.
Recently, I've been experiencing gastrointestinal discomfort that has persisted for some time.
Here’s the timeline of my symptoms: Three weeks ago, I started having soft stools that were brownish-green in color.
Last Friday night, after dinner, I began to experience abdominal pain and bowel sounds.
After taking an over-the-counter medication, I felt better.
However, on Sunday morning, I had diarrhea and noticed that my stool was dark green, contained mucus, and had a small amount of blood.
By Thursday of this week, I started having abdominal pain again and took another dose of the same medication, which helped.
On Friday morning, a colleague gave me a Nigloxacin tablet, and I only realized the next day that it was an antibiotic, so I plan to complete the three-day course.
My questions are: if I see a doctor after finishing the antibiotic, will they be able to determine what my issue is? I missed one dose of the antibiotic; will that cause any problems? Thank you for your response, Doctor.

Peipei, 30~39 year old female. Ask Date: 2016/11/06

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Based on the symptoms, there is a high possibility of gastroenteritis; however, the presence of mucus and blood increases the likelihood of bacterial enteritis.
If antibiotics have been taken without improvement, it may be necessary to seek medical attention.

Reply Date: 2016/11/06

More Info


Understanding green diarrhea with mucus and blood can be concerning, and it’s important to approach this situation with caution. Based on your description, it seems you have been experiencing gastrointestinal discomfort for several weeks, with symptoms that have progressed to include abdominal pain, diarrhea, and the presence of mucus and blood in your stool.

First, let's break down your symptoms. The green color of your stool can be attributed to several factors, including the consumption of certain foods (like leafy greens), the presence of bile (which can give stool a greenish hue), or rapid transit through the intestines, which may not allow for the normal breakdown of bile. The presence of mucus and blood, however, is more concerning and could indicate an underlying issue that requires medical attention.

The fact that you experienced abdominal pain and diarrhea after eating may suggest a possible infection or inflammation in your gastrointestinal tract. The use of over-the-counter medications like Loperamide (the active ingredient in your mentioned medication) can help manage diarrhea, but it is important to note that if there is an underlying infection, such as bacterial gastroenteritis, these medications can sometimes worsen the condition by slowing down the elimination of the pathogens from your system.

Regarding the antibiotic you were given (Norfloxacin), it is important to complete the course as prescribed, even if you missed a dose. Missing a single dose may not significantly impact the overall effectiveness of the treatment, but it is crucial to follow the prescribed regimen to ensure that the infection is adequately treated. Antibiotics can alter the normal flora of the gut, which may complicate the interpretation of your symptoms if you seek medical attention after completing the course.

If you decide to see a doctor after finishing the antibiotics, they may still be able to determine the cause of your symptoms, but the presence of antibiotics in your system could potentially mask certain infections or alter the results of stool tests. It is advisable to inform your healthcare provider about the antibiotics you have taken, as this information will help them interpret your symptoms and any tests they may perform.

In terms of what you should do next, here are some recommendations:
1. Seek Medical Attention: Given the presence of blood and mucus in your stool, it is advisable to consult a healthcare professional as soon as possible. They may recommend stool tests, blood tests, or imaging studies to determine the underlying cause of your symptoms.

2. Monitor Symptoms: Keep track of any changes in your symptoms, including the frequency and consistency of your stools, any additional abdominal pain, fever, or other systemic symptoms. This information will be helpful for your healthcare provider.

3. Hydration: Ensure you stay well-hydrated, especially if you are experiencing diarrhea. Oral rehydration solutions can be beneficial.

4. Diet: Consider a bland diet that is easy on your stomach until you can see a doctor. Foods like bananas, rice, applesauce, and toast (the BRAT diet) can be soothing.

5. Avoid Self-Medicating: While it can be tempting to self-medicate, especially with over-the-counter medications, it is essential to consult with a healthcare provider before taking any new medications, especially antibiotics.

In summary, while antibiotics can be effective in treating certain infections, the presence of blood and mucus in your stool warrants a thorough evaluation by a healthcare professional. It is crucial to address these symptoms promptly to rule out any serious conditions and to receive appropriate treatment.

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