Re: red/purple hands
I also suffer from Reynauds Syndrome but only mildly. At its worst for me, my fingers and feet turn white and numb/cold and then blue/purple when the effect wears off. For me, it is triggered by too much keyboard work, touching cold metals (like the trolley handles outside a supermarket). I changed my job a couple of years ago which reduced the input/keyboard work and I am a lot better.
For some people it can also accompany other problems like heart disease or diabetes. If you are having serious problems (and it sounds like you are if they are constantly red/purple), then you should really see your doctor.