Meditating with chronic illness

I'm an American living in Bangkok. I have Parkinson's disease and have recently (last week) developed restless leg syndrome. It's now 4:30 AM & I can't sleep - because of the discomfort in my legs. I haven't had a good night's sleep in a long time. I'm trying different therapies for the legs but nothing seems to work so far. Although I have an Angel looking after me, she doesn't really know what I'm going through - and I'm trying to keep a positive outlook, which is getting harder with this sleep depravation! I'm feeling afraid and alone. I've been attracted to Buddhism for a long time and have meditated off & on for quite a while. When I try to meditate, I'm just too uncomfortable to do so, even while lying down. Has anyone been in a similar situation? Any advice?