Abdominal Pain - IBS and Dangerous Signs (Colorectal Adenocarcinoma) USMLE 1

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In Irritable bowel syndrome we honestly don't know much and it's hard to tell why the patients experience pain but in diverticulitis and cancer we more or less do understand why patients experience abdominal pain. But don't worry, I have the explanation for you! 
Please watch my full explanation here:

https://youtu.be/mFTNXhPHC9A