Cold Mottled Hands Causes Cold Hands? (20characters)?

Cold hands? (20characters)? - cold mottled hands causes

He seems to always have cold hands. I know that not all the time, me, because I think, but if I touch my arm or a leg or someone else I can do, as my hands feel much cooler than they are. So, sometimes when they are cool, really) (as in cold, are slightly purple / blue spots. difficult to explain, but the veins are much more sensitive to.

What could be causing this? And, more importantly, how can I stop to get rid of?

Thank you!