Moved your Post to a dedicated Topic to act as your intro, hope you don’t mind!
First: welcome!
The vestibular sense is closely related to sense of self, ego. This can translate into weird feelings of disassociation and related feelings. It was the first thing I felt … almost an out of body experience and I thought I’d had a stroke.
Btw, I looked at your bio (thanks for filling it in) and I notice you love video games - do you ever wonder if they have been a contributing factor?
I often wonder that if you play 3D first person games a lot, this will irritate the brain as you are forced to disconnect your inner ears from movement …
We had another user here (@Kon) who first encountered these symptoms after an extended gaming session (see Diagnosed with migrainous vestibulopathy)
I wonder if the stress of gaming might also be a root cause …