Bowel Issues: Variations in Stool Consistency and Causes - Surgery

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Bowel movement issues


Doctor, I would like to ask about my bowel movements.
Sometimes they are loose, sometimes they are narrow and elongated, and at other times they are thicker and more formed.
I have noticed that my bowel patterns can change due to emotions and stress.
Sometimes I have loose stools for three days, sometimes I have narrow and elongated stools, and at other times I have more formed stools.
The frequency of my bowel movements does not exceed three times a day; sometimes it's two times, and sometimes just once.
I have not experienced any weight loss, dizziness, anemia, or fatigue.
However, in the past few days, due to heightened emotions, my stools have been consistently loose, and I occasionally feel mild pain around the anus and internally.
Additionally, I have a question regarding my colorectal polyps; sometimes my stools become misshapen or more elongated.
Shouldn't the stool consistency remain consistent rather than varying between thick and thin? Could you please clarify this for me? Thank you!

Xiao Jia, 20~29 year old female. Ask Date: 2020/10/09

Dr. Ke Fangxu reply Surgery


Based on your description, it seems more like Irritable Bowel Syndrome (IBS).
It is recommended to start with a light diet and maintain a good lifestyle routine.
Spicy, irritating, and greasy foods should be avoided.
Increasing dietary fiber can also be beneficial.
If symptoms persist without improvement, you may consult a physician for medication or consider undergoing a colonoscopy.
Colon polyps rarely cause changes in stool shape unless they are very large and located near the rectum.
The most common cause of stool shape changes is still hemorrhoids.
Of course, low rectal cancer can also be a factor, but the likelihood is significantly lower.

Reply Date: 2020/10/09

More Info


Understanding variations in bowel movements can be complex, as many factors can influence stool consistency and frequency. Based on your description, it seems you are experiencing a range of stool types, from loose and watery to more formed and elongated shapes. This variability can be attributed to several factors, including diet, stress, emotional state, and underlying gastrointestinal conditions.

Firstly, it’s important to recognize that the consistency of stool can be affected by dietary choices. Foods high in fiber, such as fruits, vegetables, and whole grains, typically lead to more formed stools, while a diet low in fiber can result in looser stools. Additionally, certain foods can cause temporary changes in bowel habits. For example, dairy products can lead to loose stools in individuals who are lactose intolerant, while high-fat foods may also affect stool consistency.

Stress and emotional factors play a significant role in gastrointestinal function. The gut-brain connection is well-documented, and emotional stress can lead to changes in bowel habits. For instance, anxiety or stress can increase gut motility, leading to diarrhea, while stress relief can sometimes result in more regular bowel movements. It’s not uncommon for individuals to experience fluctuations in stool consistency during periods of heightened emotional distress.

Regarding your mention of rectal pain and the presence of rectal polyps, these factors can also contribute to changes in bowel habits. Rectal polyps can sometimes cause alterations in stool shape, particularly if they are large enough to obstruct the passage of stool. This could explain the occasional narrow or ribbon-like stools you are experiencing. However, it is essential to monitor these changes closely, as any persistent alteration in stool shape, especially if accompanied by rectal bleeding or significant pain, should prompt further evaluation by a healthcare professional.

You mentioned that your bowel movements can vary from loose to more formed stools, and you have not experienced weight loss, dizziness, or fatigue. This is a positive sign, as it suggests that there may not be a significant underlying systemic issue. However, the presence of rectal pain and the emotional stress you are experiencing should not be overlooked. It may be beneficial to engage in stress-reducing activities, such as exercise, meditation, or counseling, to help manage your emotional state and potentially improve your gastrointestinal symptoms.

In summary, variations in stool consistency can arise from a combination of dietary factors, emotional stress, and underlying gastrointestinal conditions such as rectal polyps. It is crucial to maintain open communication with your healthcare provider, especially regarding any changes in bowel habits or the presence of rectal pain. Regular follow-ups and possibly further diagnostic evaluations, such as colonoscopy, may be warranted to ensure that any potential issues are addressed promptly. Keeping a food diary and noting any correlations between your diet, stress levels, and bowel movements can also provide valuable insights for you and your healthcare provider in managing your symptoms effectively.

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