Damage to several nerves that form part of the peripheral nervous system at the same time is called polyneuropathy. Neurological losses occur in polyneuropathy, a disease that causes the nerves in the body to lose their functions. The nervous system consists of the central nervous system and the peripheral nervous system. The peripheral nervous system is the nerve network that carries signals to the limbs and organs through nerve roots, nerve bundles (plexuses) and peripheral nerves originating from the spinal cord. The damage to the nerves caused by this problem usually begins at the end farthest from the brain. The condition worsens due to loss of sensation starting in the toes and fingers and extending upwards, and decreased movement in the foot and hand muscles. While poly means multiplicity, neuro nerves and paw mean damage. The incidence of polyneuropathy increases with age.