What Causes Constant Neck And Shoulder Pain?

Hi, may I answer your health queries right now ? HPlease type your query here...Hi there. I have constant neck annd shoulder pain. I have tried physio acopuncture and choropractor. After i have been in more pain than before the treatment. I constantly take co-dydramol tabs. Iam 74 yrs old and seem to be getting worse every day. I am 5ft 4ins and weigh 11 stone. Any help will be appretiated. S Bower