Hi,
Although my son is fuctioning just as he had before, he every few months or so will wake up with terrible nausea and then it will become diarrhea, sorry to the sqeamish!! I have been curious about it because each time it happened we were in somewhat stressful circumstances, whether visiting family, or exam studying. He recovered from it in a few hours but became exhausted after. Normally, one would think he just got frequent stomach viruses, or had a food allergy but being paranoid now I have been suspicious it is the injury still. There is really nothing to do about it because it does not happen very often but it may be interesting to report.
Nancy