If you have confirmed herniated cervical disc, the pain and numbness probably id related to that more than your mental illness. I agree with rcsweep that emotional turmoil certainly can cause muscle spasms and that could be part of the problem but especially with the numbness you are feeling, it's likely related to the herniated discs. Again, this is assuming you have them, otherwise there are other physical reasons for numbness in the arms. Good Luck and I hope you feel better soon.