I want to add my possible reasons for EC.
I took Antibiotics 2 times in the span of an year. Also i was bit stressed out as i was looking for job at that time.
After I had first dose Antibiotics for 7 day course, EC slowly started, But by the time, it was about to vanish, i took the second dose of Antibiotics 5 months after the first dose. This was also a 7 day course. And now the EC never left me. I have been suffering from EC for the past 10 months.
I am strictly doing probiotics, fasting, etc etc (Pretty similar to candida diet. No sugars)
I think i should blame antibiotics in my case. However, i had a history of EC for three times.
First time(2006) i had EC which lasted for a month or so. Then after 2 years(2008), EC came back and lasted for a month or so. But the third time(2011-12currently), it never left me since 10 months.
I cant remember what caused my EC in 2006 and 2008. I used take a lot of cold and caugh capsules (ColdAct capsule) during those periods. I am not sure coldact is an antibiotic. Also i was bit stressed in both 2006 and 2008 due to financial issues.