Hi susshie - welcome to our community!
I had posted previously in this thread about
the pulsatile tinnitus.
Mine is definitely from my lyme and/or coinfections.
When it first started, I would also get a pulsing in my head when I stood up from sitting position. I kept taking my blood pressure thinking that's what was wrong...but my bp was fine.
The tinnitus - pulsing in my ears was only noticeable when i put my head on the pillow and the side that was on the pillow - I would hear/feel the pulse...and even a swooshing sound when it was really bad.
It is negligible now...since treatment, only once in a while to I notice it.
I found this website - if you scroll down and read "OTHER POSSIBLE CAUSES" - Lyme disease is listed.
vestibular.org/tinnitus