I always thought my pulsatile tinnitus was from bartonella. I've seen it on the bart symptom lists a few times.
But, it never fully went away - with over a year of bartonella treatment. It seemed to be somewhat better...but not fully.
Then I treated Babesia and it's now gone. It did take over 7 months of heavy babs meds.
I stumbled across this babesia symptom list - and it does have tinnitus listed.
/suzycohen.com/articles/lyme_babesia_treatment/