When ever it is really cold and im not wearing gloves, my hands turn red they swell and hurt very bad what is this?

Raynaud's : This is a condition that may be related to raynaud's disease or phenomenon if associated with other illnesses. It may require a trial of different medications to help minimize the symptoms. Surgery is occasionally indicated.

Evalution: You should go for valuation to search for underlying medical issues such as thyroid disease. Most cases have no underlying cause , is more common in women then men mittens on the hands do better then gloves warm socks for feet.