My name isXXXXX a registered nurse. I am honestly sorry for your partner's circumstances, very much appreciate your patronage, and am glad to try and help out.
Yes, the clinical picture you've described certainly could be attributable to Irritable Bowel Syndrome (IBS). However, "could" is the very best that can be said, and frankly I'm concerned about some other possibilities. Given his age (but not exclusively limited to such population), a pattern of intermittent bowel changes raises a red flag for colon cancer. Your mention of burning and so forth raises the specter of Gastro-Esophageal Reflux Disease (GERD), Peptic or Duodenal Ulcer, and so on. Barring some unusual circumstances, his first screening Colonoscopy should have been performed at age 50, so he's a decade behind in that respect. Please, encourage him to undergo a proper Gastroenterology assessment. That is truly the only prudent approach here.
If you have a follow-up question or need clarification, please just say the word by using "reply" to reach me.
I truly hope all works out for you.
Thanks Ben....He takes nexium every day. I can't get him to a gastro doc...he refuses so I get to clean up the poop. I'm afraid that he will become incontinent soon since he'ss been a para since age 19. Thanks for your inciteful answer.