The presidential primary system has a rich and interesting history in American politics. From the nominations by caucus, in the days of the Founding Fathers, to the most recent contests, we have seen the electoral process go through a dramatic change.
Usually a nerve root block is only carried out when other methods of treatment have tried and failed and any nerve root that is blocked, will have been the most likely originator of pain. The procedure is not undertaken on each particular nerve.
Like general anesthesia, nerve blocks involve some minor risks. The risk of infection is very low as the procedure is done in a sterile manner. There is an extremely low risk (<0.1%) of injury to nerves, and this is usually temporary. Back to Questions.