How long does it take for a nerve to heal after stroke?

Answer 1

Nerves are composed of a bunch of small fibers called axons. If that axon is allowed to regrow it will regrow at an average rate of 1-2mm per day. Some nerves have axons that may grow faster or slower. This is true only if the injured nerve is allowed to regrow, i.e. if is severed or compressed without any sort of decompression it may not be able to completely regrow. The 2 main factors that determine whether or not an axon will regrow are (1) if the soma (i.e. cell body) is still alive and attached to the axon, and (2) if the endoneuriium which forms the tube that the axons travel down is still intact.

It it is allowed to regrow the length of time depends upon how much new regrowth is required. If you injured a nerve in your lumbar spine (i.e. your low back), that may be 1 meters worth of growth to get to the feet. At 1-2 mm per day, that may take up 500 to 1000 days. If you injured a nerve at your wrist (as occurs with carpal tunnel syndrome and the median nerve), that may be 5 cm and could take 25-50 days to completely regrow.

Answer 2

Nerves repair VERY slowly, so it depends on the severity of the damage to the nerve and how quickly the body can heal. The speed can be improved with proper nutritional support and regular exercise.

Answer 3

It can take a long time for a torn nerve to heal, up to a few years. Torn nerves require treatment by a physician, rehabilitation and physical therapy.

Answer 4

Some can never be healed

Answer 5

approximately 5 years or more :)