Dear Kevin, Brachial plexopathy can be a challenging condition to treat, and often a team approach with assistance from different specialties in terms of interventions is necessary. A consultation with a pain management team would be an avenue to explore. At different institutions the team may be from different departments. For example, at our institution Cleveland Clinic we have a pain management team that works out of the Department of Anesthesia. We also have a Palliative Care Service, which works out of the Oncology department, who also has experience dealing with this condition. In a larger institution there may be more access to input from various specialties such as neurology, pain management, physical therapy, so this may be a direction for you to look into.
If you have not done so, on the MedHelp home page try searching under brachial plexopathy. There is a nice description of the condition, along with treatments, which may give you ideas of other area