The loss of nerve supply can be caused by injury, disorders, or result from a surgical procedure. Injuries<unk>  may be the result of nerve injury. The three main types of nerve injury are neurapraxia, axonotmesis and neurotmesis. These three types distinguish between the severity of the nerve damage and the potential for recovery after the damage. After an injury in which some nerves are damaged, the brain has shown capabilities in rewiring or rearranging neuronal circuitry. This plasticity allows for the brain to compensate for the loss in neuronal communication resulting from injury. Disorders<unk>  processes have a strong association with the symptoms seen in post-polio syndrome. Those with post polio syndrome are undergoing a constant process of<unk>  and reinnervation. This process occurs after acute poliomyelitis and leads to increased motor unit areas over time. The motor unit areas soon increase to a point where reinnervation is no longer possible causing an uncompensated<unk>  of motor units which leads to muscle atrophy and loss of muscular strength. Following an acute polio infection diagnosis symptoms such as fatiguability, general weakness and pain are believed to be correlated to muscle<unk> . Much like post-polio syndrome, amyotrophic lateral sclerosis also has similar symptoms of motor neuron degeneration leading to general weakness and in some cases paralysis. The type of symptoms experienced can depend on which particular areas of the body experience the loss in nerve supply. This process of<unk>  is however different from post-polio syndrome in that it only involves upper and lower motor neuron degeneration and does not experience a process of constant reinnervation and<unk> . Surgical procedures In addition to peripheral nerve injury,<unk>  is used as a medical procedure for various benefits resulting from eliminating nerve supply to a specific area of the body. In renal<unk> , the procedure involves using radio frequency or ultrasound to remove sympathetic nerve supply to the wall of the kidney with the intention of reducing blood pressure and treating chronic hypertension. However, renal<unk>  is used less frequently in recent years due to new evidence suggesting that blood pressure is not significantly reduced after the procedure and there are even recommendations against using the procedure since there has been little proof to show that renal<unk>  leads to reduced blood pressure. Other prevalent surgical procedures involve intentionally reducing nerve supply to treat a variety of disorders. In a sympathectomy, a sympathetic ganglion is surgically removed to treat hyperhidrosis, or excessive sweating. In a vagotomy, the vagus nerve is surgically removed to treat peptic ulcer disease through reducing stomach acid. In a rhizotomy, nerve fibers in the spinal cord are removed in the hopes of eliminating chronic muscle pain.
Denervation
Rejuvenation
Decapitation
Tutoring
Avolition
Counterstimulation
Seclusion
Harm avoidance