Peripheral neuropathy is damage to the peripheral nervous system. This part of the nervous system is the network that sends information from the brain and spinal cord to the body, and carries information back to the brain. When the system is damaged, these vital messages can be distorted or interrupted. In Guillain-Barre syndrome, for example, the body's immune system attacks part of the peripheral nervous system. This causes muscle weakness, tingling and sometimes loss of muscle use in part of the body (paralysis). While most people recover from Guillain-Barre syndrome, others continue to have some weakness.