Hi i am Dr Ahmed Aly thanks for using healthcaremagic site , I had gone through your question and understand your concerns .. In my opinion from your given history that is a kind of pain called neuropathic pain usually due to nerve compression that may cause such symptoms for your case i think it is cervical radiating pain. And that neck vein maybe only due to a bad sleeping posture which i dont think you should be worried of . For my patients i may recommend avoiding heavy lifting , vigorous movement , bad sleeping postures , painkiller like advil tab when needed , hot massages with topical gels , muscle relaxants ,physiotherapy will be effective for mild cases otherwise i suggest X rays , CT , MRI , Doppler U/S on venous system of your shoulders to exclude cervical disc herniation and visit your neurologist for proper evaluation and management . Please click THANK YOU and consider a 5 star rating with some positive feedback if the information was helpful. Hope the above information helps you, Any further clarifications feel free to ask.