I imagine it could happen with a partial blockage.

@Sara Marie posted:

I imagine it could happen with a partial blockage.

Ah, good point. Hadn’t thought of that.

I’m taking a medication that can cause constipation and overflow diarrhoea as a side effect in “normal” people.

I’m having problems and am trying to work out whether it’s likely to be the medication. (It’s a calcium-channel blocker, diltiazem, and constipation plus overflow diarrhoea are listed in the side effects.)

I’m having normal BMs most of the time but I’m getting occasional bouts of nausea, feeling hot, heart rate going up, and an angry and very watery BM followed by quickly feeling better. All happening in about half an hour and I’m feeling totally normal j-pouch-wise and otherwise in between.

I find that psyllium husk powder with plenty of water can be a pretty good gut output consistency regulator.  Aloe juice seems to help, too. 

Those side effects sound very unpleasant.  I wonder if there is another medication that would address your issue?