How is the left hand skin numb?

This phenomenon is usually related to peripheral neuropathy or cervical spondylosis, and it is necessary to find out the reason. If you use the same posture for a long time, your fingers may be numb. Exercise more properly, and use some nerve-nourishing drugs such as mecobalamin and vitamin B 12 when necessary. It is ion disorder, acid-base imbalance, endocrine disorder and psychological factors.