katherine
hi! raynaud's syndrome is relatively unknown...there's little reference on it because there's not very much research in this area. if your husband smokes...he should quit. smoking further decreases the amount of circulation to the extremeties...aerobic exercise daily can improve circulation...keep his hands and feet warm in the winter...there are also some heart medications that may improve the circulation...not taken because he has a heart condition...but taken for the circulatory benefits. don't wear tight shoes! probably nothing you haven't heard before....right?