Cold weather, the hand is always very cold, easy frostbite! How to do

In winter when it is very cold, because of the cold climate caused by repeated erythema and swelling of local skin, in the clinical called chilblain. After chilblain, it is recommended that oral nicotinamide, nifedipine and other vasodilators, topical compound heparin ointment smear treatment, usually to do a good job of keeping warm.