R/O IBS. IBS is a diagnosis of exclusion. IUC/CROHNS DZ/IBD is inflammation usually DX by BX IBS SX can be managed .You need a full exam and blood work. Especially screen for H pylori . Also stool screen x 3 for occult blood /parasite/ &colonoscopy./EGD While you are getting these items checked out you should stick to a gluten free diet . Ie gutbliss.com and Wholeapproach.com .
Many . Irritable bowel syndrome is the multifactorial consequence of hormonal, immune system and nervous system dysfunction resulting from genetic predispositions and dietary and environmental insults. The predominant symptoms like diarrhea cramps constipation are the result of autonomic nervous system instability. Pts like you may benefit from a metabolically directed approach.
Food allergy. Check my blog if you want to understand in detail http://metametrix.Blogspot.Com - the food causes increasing allergic response in gut causing IgG activation which makes the gut leaky and eventually causes irritable bowel syndrome - the main reason is incomplete digestion of protein and animal fats, lactose, sugars - these when not digested produce Lactic Acid and starts burning and nerve inflammn.