Hi, ! This must be a very odd sensation to deal with! Digestive issues are not that unusual with MS. And, while I don't think this is exactly what you're asking about, I thought you might find this piece interesting (check out the member comments at the end of the article as well) -- https://multiplesclerosis.net/living-with-ms/famished-but-full-digestive-problems-and-their-relation-to-ms.
You're definitely not alone when it comes to stuff like this!
Best, Erin, MultipleSclerosis.net Team member.