If raynauds is so common, how come ive never heard of it?

It's not in the news: Raynaud's disease (with no cause found) and raynaud's syndrome (caused by another medical condition) are not that rare. An estimated 3% to 5% of the population have raynaud's phenomenon, although symptoms can range from quite mild all the way to severe. People with mild symptoms learn to keep warm, and might not talk about their symptoms as a disease (to them, it may just be an annoyance).