Again, I did not in any way take this as a chronic case--as a look at my rubrics and questions will confirm.
Yes, causation was clear; it was from the swimming. Effect began immediately, but then increased over the next few days.
You wrote: " when the cause is apparently nothing to do with ingestion then I personally would not have included those results in an acute consideration." Correct, the cause had nothing to do with ingestion (at least not with ingestion of vinegar or grapefruit water or any food).
So--do you not consider concomitant symptoms to be useful, or you do not consider a sudden craving for vinegar or grapefruit water to be a symptom?

