I've had them since my bloating started a few years ago, slowly getting worse. Mine are in my trunk and abdomen. My internist just looks puzzled when I mention them and the gastroenterologist says to just take otc laxatives for my "obstipation" - both responses meaning they don't know. Yours is connected with diarrhea - not usually my issue unless I overdo the laxatives.
I have tried to pay more attention to mine and find they sometimes just stop but for no reason I can determine. But they are mostly present so I have tried to ignore them like tinnitus or chronic pain or whatever has unfortunately become ongoing.
I think this group is to help one another. We may be the only "someones". Just keep looking for help.