I would be terrified if I started to develop polyneuritis symptoms! I am a fairly shaky, nervous person as it is, so I know that nerve issues can drive a person nuts.
It's awful that a person's own immune system can mess with their nerves like that. The scariest type of disease is one where your own body is the enemy.
I think that it would not take long once these symptoms developed for me to have a breakdown. Nerve issues are really hard to handle, and they mess with your mind as well as your body.