Hi,
Noted your history and understood the concerns.
Some of hte history like pain in abdomen on stress and certain foods go with the diagnosis of IBS. IBS means
irritable bowel syndrome and the commonest cause is stress and
anxiety.
One can have
allergy to certain foods, particularly in persons having IBS, acting as instigating or enhancing factors.
But the pain on left side along with back ache on the same side while passing stool indicates that this may be due to
colitis.
Hence I would advise you the following in such a situation:
Get a clinical evaluation by a Gastroenterologist.
Colonoscopy and biopsy.
Tests of stool, blood and urine.
CT scan of abdomen and back.
All this will lead to a certain diagnosis and if any specific cause is found you can be treated accordingly.
If all the investigations are normal then this can be treated as IBS and then the control of stress and anxiety is the mainstay along with avoids of all the foods, factors and beverages that instigate or enhance the problems.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T Chandrakant,
General Surgeon