The neurosurgeons we see have checked possible constipation during shunt problems but has not been an issue yet. So I know it can be an issue, just no personal experience there. Our kid has a slow system according to the gi, but nothing was dxed, not really a problem so we didn't want lots of stressful testing. She has been constipated once or twice ever. She failed the lactose testing but doesn't seem to have any symptoms (which I am familiar with). Thought anesthesia can also mess one's system up, but haven't had that problem because if there are a few days where the shunt is flakey, the kid's appetite goes and her system is empty most of the times we show up at the ED.

If there is some chronic issue, a good GI could help. We liked the guy we saw but just checking out what we needed to cross off the list was too much. Miralax messed her up because she wasn't initially having problems (even with a slow system). Figuring out her pains were from seizures made me happy we could drop a specialist but I know they are fundamental for a lot of neuro patients.