Hi.
Thanks for your query.
Noted the history and understood the concerns.
Dysentery since 1088 is a long time to suffer without a proper diagnosis or medication.
Since you have undergone the investigations as mentioned by you the real ones are not done or mentioned.
I would advise you hte following:
First of all stop Doxycyclin as it is not working at all.
Get the stool tests done for three consecutive days and get treated as per the cause found.
Also required are the tests of blood for CBC, liver and
thyroid function, amylase, lipase, and anything else as advised after a clinical evaluation by a Gastroenterologist.
Contrast enhanced CT scan of teh abdomen.
Colonoscopy.
Tests for gluten and other intolerance.
Your keen observations about hte foods and beverages that cause such a problem and stop them altogether.
If all the investigations are normal then get treated on the basis of IBS that is
irritable bowel syndrome and get a control over the stress and the
anxiety.