I am not a Dr but since this is coming on so fast it makes me think of poisoning or an autoimmune response (the body attacking itself) like Gullain-Barre (spelling?) etc. It doesn't sound like a chronic long term problem like diabetes or vitamin deficiency. Obviously you need to get into see someone quick. I have doubts that a local neurologist will be able to help but I may be wrong. You might want to visit Mayo Clinic or one of the other good neuropathy centers, I think there is one in Cleveland as well. Make sure he is eating lots of fruits, vegetables, and whole grains, and exercising as much as possible. And drinking lots of water. I'm sorry, wish I could help.
Electron