Discussions By Condition: Gastrointestinal conditions

Severe Fatigue after Bowel Movement

Posted In: Gastrointestinal conditions 5 Replies
  • Posted By: Anonymous
  • May 21, 2009
  • 06:24 AM

I am hoping someone else out there has heard of this and can give me some guidance. I get severe fatigue after a bowel movement, and when it happens, the severe fatigue lasts all day (I am destroyed and can't do anything, almost like a severe hang over). It does not happen all the time- it will happen every day for a week or two, then it will disappear for months with no symptoms. The severe fatigue only occurs right after a bowel movement. I can wake up just fine and function normally for a hour or so before my bowel movement, then I'm completely wiped out for the rest of the day once I go. There is nothing special about my poop- it is not particularly hard or soft, it is not liquidy, there is a normal amount coming out (not too much, not too little), it is normal poop color. My bowel movements are not painful and, I can't stress this enough, I AM NOT straining to go or pushing too hard. I have no idea why it happens or why it goes away- I am not doing or eating anything different. My gastro-intestinal doctor doesn't have a clue what's wrong, and he said he's never heard of this symptom before. I have a camera look at my stomach (not during an episode, however) and it appears normal. Does anyone out there have this problem or can give me a guidance on where I should look for answers?

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5 Replies:

  • I can't believe there have been no replies since 2009. I am having the same problem but with me it happens daily.
    TiredinFL 1 Replies
    • October 9, 2014
    • 05:07 PM
    • 0
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  • My wife has this same problem! But I came here looking for answers, not to give one, I'm afraid. :(

    I did find another mention of "Being wicked sleepy after a bowel movement". It was on a site called The Poop Report.

    A doctor responded there to the guy, saying it was his opinion that perhaps after have a large bowel movement, and having expelled such mass from the body, that blood pressure might have dropped, making one sleepy, until everything stabilized.

    Blood pressure issue?
    Anonymous 1 Replies
    • October 13, 2014
    • 00:20 PM
    • 0
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  • have a colonoscopy. I had this same problem in July 2011 and doctors found nothing in the tests that they gave me. I was not given a colonoscopy. In November 2012 I was diagnosed with stage 4 colon cancer. I feel betrayed by the earlier doctorsand feel the cancer would not have spread if they had just given me a colonoscopy in the first place
    Anonymous 1 Replies
    • October 28, 2014
    • 00:55 PM
    • 0
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  • Im not a doctor but I have an answer: Its a vasovagal response called defaecation syncope. Bowel movements can sometimes trigger outright fainting. When your bowels open your blood pressure drops (as long as ur not pushing) making u tired. This happens to me after a big loose bowel movement. The only remedy is to drink lots water/gatorade after to bring BP back up. If it's really bad you can buy a BP machine from the pharmacy (roughly $80) and see how much you BP drops after a bowel movement.
    AliThap 1 Replies
    • November 6, 2014
    • 11:04 PM
    • 0
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  • Thank you!! I have this same problem and it's terrible. I'm lactose intolerant and it usually happens when I have a BM after ingesting milk. But I can be at 100% energy before but near 10% after, feeling extremely sleepy and cold right in the middle of the day.
    Anonymous 1 Replies
    • November 12, 2014
    • 08:21 PM
    • 0
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