I have had numerous spinal surgeries and have a morphine pump implant that also dispenses baclavin.I also take hydromorphone for pain,tizanadine as muscle relaxer and for the past 4 wks savella for fibromyalgia.It started months ago with severe swelling in ankles and legs and in the past week the arms and hands have been affected terribly.I could find no drug interactions to cause this. Any ideas?