When you have diarrhea , feeling bloated, cannot sleep at night and filling ill, check your poop for parasites. Bring the poop to the vet to be checked for parasites.
Less agreement among physicians occurs with three other parasites: Endolimax nana, Dientamoeba fragilis, and Blastocystis hominis. For years, these three were considered harmless. Unfortunately, most lab technicians assigned to poop examination (a part-time job I myself held during medical school) are not well-trained in checking for them. It’s very likely a reasonable percentage of patients written off as irritable bowel syndrome/diarrhea dominant actually have an infection with one of these three. The main clues that their IBS is protozoan in origin are that the diarrhea emerges as a new event in their lives, unrelated to stress, and isn’t triggered by any particular foods. “I got traveler’s diarrhea while in Mexico and despite antibiotics, it never went away,” sends me a clear signal to check for parasites.