"The press picked on something which is in such early stages that it isn't really helpful. There are other treatments which are much more effective.
Most cases of Raynaud's are not so severe and can be treated with conventional strategies (vasodilators, lifestyle, stop smoking ....). Other approaches - (iloprost, bosentan, viagra) are used in a minority of cases with severe complications. Botox is much more experimental and more research would be needed before true benefit is confirmed.
In any case with regards to botox treatment this is something that has been around for a while, mainly for USA. It is one of a long list of medical uses for botox including treating muscle spasm and other neurological diseases. For Raynaud's the theory is that it may provide the benefit of a digital sympathectomy operation (that you may be more familiar with) but without surgery. Botox is injected around the blood vessels of the base of the finger. It can be quite a painful procedure but patients have reported benefit and there are several small studies from USA. It is not a cure and part of the benefit may be from blocking pain nerves as well as reducing blood vessel spasm.
Plastic surgeons at the Royal Free have treated a number of scleroderma-Raynaud's patients and some have reported benefit. At present they would only consider this in selected cases that have not responded or cannot take other standard vasodilators (adalat etc.) or intravenous iloprost. It would be helpful to have a formal clinical trial but this is something for the future. The best trial would have to be placebo controlled and so there are significant practical issues to consider".