What is my left hand numb?

There are many reasons for numbness in the left hand, which may be physiological, mainly due to overwork, bad sleeping posture and other factors. Of course, it may also be pathological. Clinically, it is common in cervical spondylosis, lumbar diseases, etc., but also alert to the possibility of stroke. If necessary, you can go to the hospital for examination and treatment according to the cause.