blue/grey hand

[Brooke]

Forgot to add that my toes turn purple sometimes but they are usually just cold, I sleep with a heating pad on my feet during the night because my feet are cold.

[Sangye]

My toes turn blue, too. Or bright red. Or a mix. One toe in particular is often gray even when all the others are normal. That little piggy never goes to market....

Cold hands and feet and/or poor circulation is a common sign of vitamin B deficiency.

[moyan]

Good morning. With so many no, no due to kidneys, I take pills with the whole vitamin b complex, c, and d/kalcium. That way I can hide the potassium chart I got at Googles.

[Mandycc]

I've always had this happen to me since being a teenager, I was told it was Raynauds: Raynaud's phenomenon - Wikipedia, the free encyclopedia

[Sangye]

Raynaud's is one possibility, but if you don't have any sensation changes as described (ie numb when cold, tingling and pain when warming up again) it's not Raynaud's. Many things can cause asymptomatic color change.