Hi Magenta.....welcome to the forum. I also had quite severe pain in the shoulders and neck and right arm which turned out to be a frozen shoulder and despite pain killers and steroid injections i needed an MUA which sorted it out and got the mobility almost back completely, fab. I had no idea at that time that i had early Parkinsons but i also had lots of other symptoms as well some 4 years before diagnosis. Including loss of sense of smell ( i returned 3 bottles of perfume to various manufacturers as i thought they must have altered the ingredients!!!! ) i shuffled when walking and the legs felt heavy, restless legs for years, sleeping was a treat when i got some! rigitity in the right hand and arm, jerky right thumb, woozy head, couldn't swing right arm when i walked and a bit of a tremor. It was such a relief to be given a diagnosis and put onto medication that has helped so, so, much. People that i meet say that they don't believe i have it, i dance, walk and find exercise and keeping as positive as possible helps enormously. Like Gus says it could be nerve pain, just make a list of all your symptoms when you see your Neurologist so as you don't forget anything, and try not to worry. Easier said than done i know, but whatever is causing your pain it can be treated. Everyone on this Forum has similar experiences but we are all here for each other and anytime you want to chat or need some support, you have come to the right place.
My warmest wishes