ok.....but lidocaine only works for a little while, so the pain after the injection must be of short duration as well and must be REALLY painful.
You guys should know that lidocaine is also used to treat irregular heart rhythms......partly because it causes an irregular rhythm itself. BE VERY CAREFUL....you could die instantly if you hit a vessel, especially with 4% lidocaine. It isnt common cuz the liver catches it before it goes to the heart, but why risk it????
T