Chronic Diarrhea: Is It IBS or Colon Cancer? - Gastroenterology and Hepatology

Chronic diarrhea can be a symptom of irritable bowel syndrome (IBS) or colorectal cancer?

I have been experiencing chronic diarrhea for almost three months, with daily bowel movements every morning.
Occasionally, I have mild abdominal cramps, followed by borborygmi and flatulence.
A month ago, I consulted a gastroenterologist who performed abdominal palpation and ordered tests for hyperthyroidism, which came back negative.
The doctor suggested that it seems like irritable bowel syndrome (IBS) and prescribed Epinine capsules for one month.
Currently, while taking the medication, my stools are usually normal and formed; however, if I stop the medication, I still experience soft, fluffy stools or diarrhea (watery consistency).
I am very worried and anxious about the diarrhea issue.
Could this be irritable bowel syndrome? Should I consider scheduling a colonoscopy?

y, 20~29 year old female. Ask Date: 2022/10/25

Dr. Chen Shidian reply Gastroenterology and Hepatology

You can first check for occult blood in the stool as a reference.

Reply Date: 2022/10/25

More Info

Chronic diarrhea can indeed be a source of significant concern, especially when it persists for an extended period, as you have described. Your symptoms, including daily diarrhea, occasional abdominal cramping, and the presence of bowel sounds, suggest a functional gastrointestinal disorder, such as Irritable Bowel Syndrome (IBS). IBS is characterized by a combination of symptoms, including abdominal pain, bloating, and altered bowel habits, which can include diarrhea, constipation, or alternating between the two.

The fact that your symptoms improve with medication, such as the prescribed Epinine capsules, supports the idea that you may be dealing with IBS. This condition is often triggered or exacerbated by stress, dietary choices, and lifestyle factors. It is also important to note that IBS does not lead to more serious conditions, such as colon cancer, although the symptoms can sometimes mimic those of more severe gastrointestinal disorders.

Regarding your concerns about colon cancer, it is essential to understand that while changes in bowel habits can be alarming, the presence of chronic diarrhea alone is not a definitive indicator of cancer. Colon cancer symptoms typically include a combination of factors such as significant weight loss, blood in the stool, persistent abdominal pain, and changes in bowel habits that are not typical for the individual. Since you mentioned that your bowel movements are usually normal when on medication and that you have not experienced alarming symptoms like blood in your stool or unexplained weight loss, the likelihood of colon cancer is reduced.

However, given your ongoing symptoms and anxiety about your condition, it may be prudent to consider further evaluation. A colonoscopy is a valuable tool for assessing the health of your colon and can help rule out any underlying conditions, including inflammatory bowel disease or polyps, which could potentially lead to cancer. While your current symptoms may align more closely with IBS, a colonoscopy can provide peace of mind and ensure that no other issues are present.

In summary, your symptoms are consistent with IBS, especially since they improve with medication. However, if you continue to experience anxiety about your symptoms or if there are any changes in your condition, it would be wise to consult with your healthcare provider about the possibility of a colonoscopy. This procedure can help clarify your diagnosis and guide appropriate management strategies. Additionally, focusing on dietary modifications, stress management, and regular follow-ups with your healthcare provider can help you manage your symptoms effectively.

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