How is IBS suspected?

R/O IBS. IBS SX BLOATING/PAIN/GAS/DIARRHEA/CONSTIPATION 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 to a gluten free diet . Ie and The SX wax and wane. MEDS: BENTYL / LEVSIN (hyoscyamine)
Abdominal pain. Alternation of diarheea, constipation and abdominal pain. Also if other causes that can cause this are ruled out.