hi. first let me tell you a little about my history

i am 24 years old. i have a neurological disease called Generalized Dystonia. i've been confined to a wheelchair since age 15. i'm also getting diagnosed with an endocrine disease, but do not have a name for it yet, i have bad hormonal problems.
anyway, i've always had severe pain, probably caused by the severe dystonia. then neurology told me to go to a regular doctor to help figure it out. i have severe pain in my joints...especially my hips. my legs are rotated severely from the dystonia, so i'm sure it is hurting my hips. i also have pain in my wrists, shoulders, neck, ankles, etc. but only the joints.
next, i have horrible fatigue. i need to sleep at least 12 hours. i've caught myself dozing off while driving. physically i feel drugged. i don't even do any excersise, seeing as i'm in a chair, and i'm still exhausted.
then, i have problems with the weather. i can't stand the heat. its winter and i still have fans going because i'm always hot. cold however, makes the pain worse. when there's a cold snap i'm in so much pain at times i could die.
so, those were the main issues me and my doctor talked about. he suggested this thing called fibromyalgia. he is doing a rheumatoid test those to rule out other diseases. i got refered back to my original doctor though, so i won't get back into the hospital for another couple weeks. he didn't really do the pressure test thing (i didn't know about this until i went home and looked it up), because i couldn't get out of my wheelchair onto the table so he really couldn't examine me. he just moved and felt my legs, but found out i have bad tremor/muscle spasms.
so, i'd love to know if FMS is possible here? can a neurological disease like dystonia (its similar to parkinson's disease) cause or trigger something like fibromyalgia?
they are doing a test for rheumatoid arthritis, but i don't have any swelling joints and it doesn't run in my family. they will probably do X-rays to look for arthritis (osteoarthritis) caused by the dystonia, but i can't get into the positions they'd want me in, so i don't know how it will work.
thanks for any input!
Angie