I have had diarrhea now for at least three weeks off and on. I have been wearing a back brace at work for a herniated disc. I'm wondering if that could be causing my problem. Usually I have it about an hour after I eat lunch. I take the brace off when I eat.
Your brace should not cause diarrhea. Try changing your diet first.
It has nothing to do with the back brace. Might be some irritable bowel, but if it persists for another week or so, then you should see a primary care doctor or a gastro specialist.