Although a neurological factor may be the cause, make sure to check out the more direct paths. It could turn out to be a slight impingement in your shoulder that's just slightly aggravating the nerve. This is easily treated with some physical therapy to help keep the bones from falling in on each other. This, in different locations throughout your body as well, is what causes Sciatica. If this escalates to a shooting pain that goes down the arm, or you start to experience tingling or numbness, then that might suggest a more physical solution.
Needless to say, among my many apparent fringe beliefs, is one that wants to avoid prescription solutions at all costs. Unfortunately, I see a lot of the medical industry being persuaded by the pharmaceutical companies to prescribe, prescribe, prescribe instead of promoting safer alternative solutions (and I've yet to see a situation that didn't have one). Unfortunately, these safer solutions don't make anyone rich, so they're typically minimized and ignored (or even outright banned by the FDA). Also note that the FDA does not approve anything that cures or prevents! Only "treatments" which means addressing the symptoms to make the condition bearable. This isn't what you want.
Most people don't realize that the vast majority of medical doctors simply diagnose, prescribe and, occasionally, cut (talking mainly MD's here, not DO's). The bulk of their drug knowledge comes from the pharmaceutical sales rep! Be sure to always ask questions of the people who ARE trained to understand medications and the interactions: Pharmacists.
If it was me, I'd try to figure out why I had the condition in the first place and attempt to address that. If it turns out to be non-physical, but not serious either, it might be easily remedied using hypnosis, NLP or acupuncture (including acupressure and electro-acupuncture). Try to get your doctor's consent first though.
Ask lots of questions and don't necessarily take the first answer as gospel! Hey, it's YOUR body, ya? ?