If the symptoms of numbness in both hands are accompanied by stiffness and discomfort in the neck, the first consideration is that the symptoms are caused by compression of the nerve roots in the spinal canal due to neurogenic cervical spondylosis. If there is also dizziness, it is necessary to exclude whether it is caused by cerebrovascular lesions. In particular, people with hypertension, hyperglycemia, and hyperlipidemia can easily cause numbness in the upper limbs due to obstruction of blood circulation. It is also possible that the nerve entrapment is caused by carpal tunnel syndrome due to work.