Sometimes numbness in the back of the patient’s head may be caused by physiological reasons, such as many people may experience it when they are tired, sleep deprived, or stay up late. Numbness in the back of the head may also be caused by ischemic disease of the posterior circulation, which is due to slow blood flow in the vertebral and basilar arteries bilaterally, resulting in symptoms of numbness in the back of the head, which can be clarified by performing transcranial Doppler examinations. In severe cases, the patient may also experience dizziness and drifting walking. Numbness in the back of the head can also be caused by cervical spondylosis, which can be triggered by improper posture of the patient. This is because a herniated cervical disc can cause compression of the dural sac, resulting in stiffness of the neck muscles, which can cause some pulling on the scalp, causing the patient’s head fascia to be stretched, and therefore a numbness sensation.