(My arms and legs are numb, I have a head tick, loss
of balance, muscle twitching, short term memory loss
, mood changes.)
The first thing I would do is to stop the cymbalta, if your wife hasn't already. I'm not a doctor, but if you are taking any drugs for four months that are not helping, stopping these may nto be a bad idea to see if any of the symptoms alleviate by going on a good nerve diet and exercising. (And remember that nerves do not heal overnight).