If your hands go numb at night, you should be alert to the following diseases: 1, cervical spondylosis: mainly due to cervical spine osteophytes and herniated discs, compression of the innervated upper limb nerves and lead to numbness in the hands. 2, peripheral neuropathy: such as peripheral neuropathy caused by diabetes, it is recommended to go to the hospital to do a blood sugar test. 3, epilepsy: there is a sensory epilepsy can also cause numbness. 3, epilepsy: there is a kind of sensory epilepsy, can also cause numbness. 4, other diseases: small infarcts in the brain or cerebral arteriosclerosis, etc., may cause numbness in the hands at night when sleeping and other phenomena. This all needs to go to the hospital to do the relevant tests to be clear.