The main causes of numbness in the right hand are: First, neurogenic cervical spondylosis, mostly seen in long-term heavy physical labor, ambulatory workers, manifested as numbness and discomfort in the hand, forearm, upper arm, often accompanied by soreness and dizziness in the back of the neck, dizziness, shoulder lifting weakness and other symptoms, cervical magnetic resonance examination suggests cervical spondylosis, electromyography examination of the affected limb, often suggesting neurogenic damage. Second, carpal tunnel syndrome, mostly seen in long-term use of wrist strength workers, such as washing clothes, doing manual work, etc., mainly manifested as hand numbness, and in severe cases, hand muscle atrophy can occur. The above two diseases belong to the scope of orthopedics, and it is recommended to choose the orthopedics department for consultation. Third, simple hand numbness can also be seen in the cerebral cortex small infarct foci, the disease is often accompanied by dizziness, belonging to neurological diseases. The symptoms of hand numbness should not be taken lightly, according to the different symptoms, choose the appropriate department for timely medical consultation.