Today, I found out I have Raynaud's, a condition where your veins basically shut off all blood flow to your hands and feet if you get cold. Turns out "cold" for me is anything below 70 degrees. Oh, and I live in Ohio. FML
there's a few treatments that help stop the vasoconstriction, but most have side effects (of course!) so a first course of action is just to bundle up...which believe me, doesn't work nearly as optimally as it should! And yup, purple/grey feet when they warm up! Some people have really severe cases where open ulcers + gangrene can occur and yes, they really do lose fingers and toes :(