Reynauds Disease -From article in backpackers club journal Winter 2004
The US military worked out a treatment regime for this.It is aimed at convincing the sympathetic nervous system that there is no need to shut off the peripheral circulation just because it is a bit chilly out.
Start in a nice warm place with nice warm hands.Fill a bucket with water at 44c[and keep a kettle on hand to keep the temperature up].Don't worry too much about the measurement 44c is about the hottest you can keep your hands in.Go to a cold place [at least 10c colder than the warm place preferably much colder] and sit for half an hour with your hands /feet in the water.
don't worry about the cold ,you'll absorb so much heat through your hands as to be sweating at the end.Go back to a warm place,dry hands thoroughly and keep them warm.
Do this every day for a month .Results -after frostbite years ago I have had bad problems with circulation.I have been doing this for a week and my hands have only gone blue once.I have also spent a day outside at 4C with no circulation cut off when normally my hands go blue below 15c.
Some people need to renew the treatment every year others every few years ,others never.Well see how effective it is after the full month.
Ok so that was last year .It was a bit late in spring so the results seemed promising but no great shakes.Now it's cold enough that I should have had blue hands and a good crop of chilblains for a couple of months.But no circulation problems at all.My hands are like a humans...no circulation cut offs,no chilblains and I have been much less carefulabout keeping them warm too.So it looks like last years treatment did work and very effectively.
Hope this may be of some help

I've just got myself a pair of kids marmot borealis mitts. They are superb. I'm fine when I'm moving in these.
It tends to get worse though when I'm standing aorund getting cooler after exercising so I always try and have something I can change into once I've stopped .
The above method depends on what causing the Raynauds, there are so many potential causes and it may not help for some.

As a white finger / cold hands sufferer myself I have tried many types of gloves and mitts, usually with mixed results. In very cold weather I only wear gloves for short periods, then revert to mitts. The warmest combination I've found so far are Ortovox Arctic Mitts with Outdoor Designs "Summit" gortex overmitts. The Otovox mitts are woollen, pre-shrunk like the old Dachstein mitts but thicker and shaped to match the natural curve of the fingers. They are incredibly warm and seem to be more durable than pile or man-made filling. The overmitts are completely waterproof, but need to be a size larger to avoid squeezing the thumb and restricting circulation.

loosefoot --got same problem--where did you get ortovox mitts

They are not widely stocked - wool must be less fashionable than it used to be. Got mine from mountainspirit.co.uk.

Re Buffalo mitts - I always wear large in gloves, a 'large' buffalo is a bit of a tight fit.

thanks loosefoot----ordered a pair

Try looking for gloves or mitts with Primaloft insulation. It's very warm. My lady friend always has cold hands, but used a pair of extremities gloves with primaloft when we went skiing a couple of years ago and had no problems... And it was February in Vals Thorens - very cold. try www.extremities.co.uk