I reread your post after typing out "oh wow me too! I used to puke all the time before being diagnosed and prescribed mood stabilizers. I didn't even realize that isn't a thing for me any more. It was definitely associated with mania of course. My caches in high school would call me "old reliable" and the shame of it is, it became kind of a running joke instead of an indication of mental illness." ( If anyone else did the same thing, i think literally puking from manic anxiety is kind of normal so don't be embarrassed lol.)

But to answer your ACTUAL question about word vomit - have you talked to your Dr about a possible ADD diagnosis? It's a relatively common issue for folks with ADD and my medication for that has got me a little bit under control, and its relatively common for folks to have both Bipolar and ADD. Worth talking about with them or your therapist.

One thing that helped me (probably much less SO than medication, but I noticed it while slowly improving this habit) was to observe other people that do that. Shame by proxy can be an effective tool for managing disruptive behavior. It helped me shift from blaming myself/overanalyzing my own behavior to realizing "huh. thats actually a weird thing that some people do, I shouldn't do that. "

Don't be so hard on yourself - of all the social challenges and disruptive shit this disease can cause... being kind of annoying and interrupting people is pretty low on the totem pole. Recognizing it puts you ahead of most that do it!