Beginning in February of this year I have had 4 attacks on the following dates with the indicated symptoms:
Feb. 13, Diarrhea, vomited small amount, duration of a few hours
April 15 Diarrhea, fair amount of vomiting, some blood in stool visible, lasted approx. 9 hours, weakness and dizziness
June 17 Diarrhea, no vomiting, lasted about 4 hours, weakness and dizziness
August 19 Diarrhea, no vomiting, lasted about 2 hours, mild weakness and dizziness
At my regular checkup in June, late June, I told the doctor about my symptom. He wanted me to have an endoscopy and colonoscopy, which were scheduled for mid-July, but then I was called back to say that he had to be out of town on the date scheduled, so I decided to wait and see if the symptoms the next time were milder (which they were). Someone on a bulletin board I frequent asked if I had been checked for intestinal parasites. I haven't. Note that the time period between the first and second attacks was 62 days, the period between the 2nd and 3rd attacks and the period between the 3rd and 4th attacks was 63 days. When the person who asked about parasites, it dawned on me that the developmental stages of the parasite (if that's what it is) could be around 62 or 63 days, which makes me think the parasite problem is what is at work here.