Do warfarin turn nails blue

Answer 1

I have been on warfarin since July 2010. In the last few months I have noticed my thumb nail beds turn a blue or purple color. It doesn't matter if my hands are cold or warm. It doesn't matter if I am sitting or moving. Sometimes other fingers are affected but primarily it is my thumbs on both hands. I showed this to my doctor and he said yes that can happen with warfarin.

When I research it though I find something called purple toe syndrome. It can affect the feet and hands. It is considered a serious side effect of coumadin/warfarin and it says to notify your doctor immediately. My doctor didn't seem to think my blue thumbs are purple toe syndrome though.