Lumbar Sympathetic Block
The sympathetic nerves run on the front surface of the spinal column and not in the spinal canal with the nerves from the central nervous system. The sympathetic nerves are part of the autonomic nervous system which is responsible for controlling things people do not have to think about or have direct control concerning their function (i.e. heartbeat). However, there is a connection between the central and autonomic nervous systems. For instance, sometimes arm or leg pain is caused by a malfunction of the autonomic system after an injury.
Regardless of the level of the spine at which it is applied, a sympathetic nerve block involves injecting medicine around the sympathetic nerves in a lumbar or cervical area. By doing this the system is temporarily blocked in an attempt to reduce or eliminate pain. If some level of success is achieved after the first block, then additional blocks are generally repeated in 7-10 days and repeated again until the pain diminishes.
