One of our members created a website with information on Raynaud’s of the nipple.
Raynaud’s of the nipple is the name given when women are affected by nipple vasospasms. Vasospasm is the constriction of blood vessels, cutting off the blood supply. During this phase the nipple turns white. The nipple then typically turns purple and then pink as blood low in oxygen, and then high in oxygen enters the nipple.
I hope this helps.