If the lidocaine hits the blood supply to the brain quickly, you'll have a reaction like you describe. I've had prolotherapy in the shoulder and biopsies looking for prostate cancer and each time enough anesthetic made it into the blood stream and caused the same problems. I never actually fainted but got really dizzy and occasionally greyed out a bit. Hopefully, it faded in less than an hour. For me, it normally takes 10 to 20 minutes to get functional and about 30 to 60 minutes before the feeling completely fades.
Laura has had the same problem as well as the prolotherapist's office manager so it's a fairly common problem.
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Laura - L5S1 Charitee
C5/6 and 6/7 Prodisc C
Facet problems L4-S1
General joint hypermobility
Jim - C4/5, C5/6, L4/5 disk bulges and facet damage, L4/5 disk tears, currently using regenerative medicine to address
"There are many Annapurnas in the lives of men" Maurice Herzog
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