I had the lidocaine block as a diagnostic test to
indicate that I was a good candidate for
sinus surgery, and would not recommend it
as a long
-term treatment or solution. The lidocaine made the pain in my nose, right eye, and upper teeth disappear almost instantly, but also made it hard for me to breathe or swallow for almost two hours afterwards. It made me nauseous as well, and the pain came back as soon as the lidocaine-saturated cotton was removed from my sinus cavity.