What reason is the hand easy to grow chilblain?

Clinically, the cause of chilblain is directly related to cold. Frostbite occurs at the extremities or on the skin that needs to be exposed for a long time, so hands and faces are very common places where frostbite occurs. The most important reason for hand frostbite is that hands are not well kept warm in winter, or patients need to soak their hands in cold and humid environment for a long time because of work or life needs. Some patients have frostbite on their hands because the local blood circulation is not very good. For example, elderly patients have problems with blood vessels on their hands, or they are in poor health, such as anemia, and their hands are prone to frostbite.