What Causes Pain In The Joints And Muscle Spasms?

my symptoms are (as diagnosed by my doctor) degenerative arthritis, sinusitis, forgetfulness, sleep apnea. steroids do not help, and inflamation does not happen. my doctor has all this in my records, i am wondering if they have overlooked a link between all of it. always being tested, but no diagnosis for cause. i am in constant pain i all my joints, and have muscle spasms. i weight train 1 to 2 times a week trying to keep blood flowing, but it takes alot of those nitric oxide pills to motivate me. i will answer any question. i used to be an athlete, now i am on temporary disability and about to lose my welding job. insurance is about to run out and i have no diagnosis.