Are there over-the-counter medications that can help with Parkinson's disease pain?

Important issue. Most patients with parkinson's disease encounter significant pain, often a profound challenge, as many doctors are not aware of how significant this can become. Core approach involves careful control of the tremors and stiffness by usage of basic meds, but in some cases, pain med patches are of value. Although otc pain meds may help, more aggressive drugs may be needed. Pain cremes may help.
Tylenol, (acetaminophen) Ibuprofen. No specific over the counter drugs but tylenol (acetaminophen) and Ibuprofen should help.
Yes. Yes, but no medications which differ significantly from any other otc pain relieving agent. Avoid high doses of any otc medication especially if you have any type of liver or kidney disease or are taking a "blood thinner". Some authorities do feel that if pain is due to increased "nerve" activity then Benadryl (diphenhydramine) may be helpful. It is surely relatively safe to try. Dr. J.