is it just pain in your joints or ae you experienceing some small dislocations also?
Why i bring it up :
1.) I have a conective tissue disorder which most doctors donot know of or heard of. (I have the very same pains in the joints knees, ankle, elbow, shoulder, hip and wrist). Its called Ehlers Danlos alot more people are being diagnosed with it because alot more doctors are learning about it.
2.) If you are tired also or very fatigued you might ask about Fibromylasia (SP) Its also like arthritis but make s you tired and very achy.
3.) One more would be something called hypertension
all these i believe have to be diagnosed by a genetics though.
Hope maybe this will shed some light and maybe another door will open with some ansers
and by the way Im only 26 and has had this joint problem for 10 years now