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.
Purpose of Nerve Blocks. Blocks with local anesthetic can be used to control acute pain. (Hence, the shot at the dentist or the epidural block for a surgery or a delivery.) Pain and injury often makes nerves more sensitive, so that they signal pain with less provocation.