I never heard of raynaud syndrome, but any 'syndrome' generally ain't good. However... my experience with carpal tunnel years ago was really bad, both paws. I went to chiropractor who had some success treating it with other patients. It got to where I had a rough time even gripping motorcycle handgrips. Could not hang onto anything the size of a 100-pair telephone cable, about the size of a heavy duty garden hose. No luck.Tried the hand/wrist braces at night, no deal. Hard to scratch yer ass or molest the wife (had one back then) while wearing those damn things. Chiropractor advised vitamin B complex supplements, can't recall if b-6 or 12. Didn't want surgery if alternative solutions existed. So on the cheap additives I went, and it worked better than I expected. No problems to this day! It came, it went, it never returned! @Pio1980 & others,give that a go before considering getting cut upon. Can't hurt!