Hand numbness should be registered with different departments according to the cause. Because hand numbness is mostly caused by neurological diseases, you can first hang up the neurology number, the neurologist according to the hand numbness to improve the examination, clear the cause of the disease, and then transfer to the relevant departments of the number. Hand numbness is usually caused by cervical spondylosis, carpal tunnel syndrome, diabetic peripheral neuropathy or vascular disease, vitamin deficiency and other diseases. 1. Cervical spondylosis: cervical spondylosis compression of the spinal nerve can appear in the upper arm to the hand of the strip sensory impairment, often accompanied by numbness and discomfort or even pain, mostly manifested as a unilateral symptom, commonly found in the long years of ambulatory workers, long time head down to play the cell phone, etc., can be diagnosed and treated by the Department of Neurology. 2. Carpal Tunnel Syndrome: Frequent rubbing action so that the narrow carpal tunnel compression of the median nerve can occur in the thumb, finger, middle finger and ring finger half of the numbness, mostly manifested as unilateral symptoms, commonly found in women doing housework, inappropriate use of the mouse, bad wrist habits, etc., can be diagnosed and treated by the Department of Neurology. 3. Diabetic peripheral neuropathy or vasculopathy: it is a common complication of diabetes mellitus, and numbness of the limbs can be seen in the early stage of diabetes mellitus as well as in the distant stage of diabetes mellitus, and it can be diagnosed and treated by the Department of Neurology and Endocrinology. 4. Vitamin deficiency: vitamin B1, vitamin B12 and other deficiencies can affect the function of the nervous system, thus causing numbness of the hands and feet, mostly symmetrical numbness, can be diagnosed and treated by the Department of Neurology and Nutrition. If the hand numbness discomfort, should be timely to the regular hospital consultation, clear cause of the disease by a specialist to guide the treatment.