HI Bshuhl,
Thank you for your question. I'm sorry to hear you had a rough time coming off Cymbalta. I do know one of the less common potential side effects of this medication can be joint and muscle pain. It is recommended we taper off Cymbalta slowly. If we don't (I tapered off Cymbalta slowly) it could produce unwanted side effects.
If you haven't talked to your doctor and/or pharmacist about this, I would encourage you to do so.
Let me know how you make out,
Nancy