For a long time now, when I get a migraine, I have loose stools or diarrhea, and stomach cramps. I've had 2 migraines in the past week that followed this pattern. Very early yesterday morning before the alarm went off, I was aware when I was half asleep that my head hurt. I got ready for work, and before I left the house, had an episode with loose stools, and took 1 immodium tablet. I went to work, and within an hour, was in the bathroom with diarrhea and stomach cramps, so I took another immodium. This is not unusual, and pretty much what occurred a week ago. For full disclosure, I will say in my family, there is a tendency toward IBS symptoms, although to my knowledge, no one has ever been officially diagnosed with it.
I asked my neurologist if he would prescribe anything as a preventative, since of course, immodium is something you take after the loose stools start, The answer was no, I should consult my GP or gastro, if I have one. He and I have discussed before the lower tract symptoms, and I've gotten the impression that he doesn't believe that can be part of a migraine like nausea and vomiting. I have seen a gastro, but she insists on getting a scope before she will prescribe any meds. I'm not excited to do that for the possibility of getting a drug to help, and I'm not that desperate yet. (I had a negative Colo-guard 2 years ago, so I really don't need a scope for that, either.) I did have to take half a day off work last week. Yesterday, the immodium helped, and although I didn't feel the hottest, I was able to make it through the work day, since it was a relatively quiet day.
If anyone has any suggestions besides of course consulting with my GP, please feel free to weigh in. I do like my neurologist. There are 2 headache specialists in my area, and IMHO, he is the better of the two. Which of course doesn't make him perfect.