The back of the right hand and right foot numbness is considered to be physiological reasons, cervical and lumbar spondylosis, cerebral hemorrhage and other reasons. 1. Physiological reasons: due to the right side of the limbs when sleeping for a long time is compressed, resulting in blood circulation disorders will lead to numbness of the limbs on that side, is a normal phenomenon. 2. Cervical and lumbar spondylosis: cervical and lumbar spondylosis caused by the back of the right hand and right foot numbness is mainly due to cervical and lumbar disc protrusion degree of heaviness, compression of the nerve root can lead to numbness of the right hand and right foot. 3. Cerebral hemorrhage: cerebral hemorrhage can cause local damage to the brain tissue, leading to the right hand and right foot part of the sensory nerve damage, causing numbness of the right hand and right foot. The numbness of the back of the right hand and right foot may also be caused by peripheral neuropathy, etc. Once the numbness of the right hand and right foot occurs, you should go to the regular hospital in time after excluding the physiological reasons, and ask the doctor to clarify the cause of the disease, and carry out the corresponding treatment.