Neuralgia in the back of the head may be related to lack of sleep, or it may be caused by cervical spondylosis, high blood pressure, brain tumor and other reasons. 1. Lack of sleep: If the quality of sleep is poor and the duration of sleep is insufficient in the near future, it will easily lead to brain dysfunction, resulting in cerebral vasodilatation and contraction dysfunction, which may cause neuralgia in the back of the head, and may be accompanied by drowsiness, mental fatigue and other symptoms. 2. Cervical spondylosis: If patients with this disease fail to pay attention to good daily care, and maintain an unreasonable posture for a long time, it is easy to cause local vascular compression, resulting in insufficient blood supply to the vertebral basilar artery, which may cause neuralgia in the back of the head, and may be accompanied by dizziness, neck and shoulder discomfort and other symptoms. 3. Hypertension: Some people fail to take antihypertensive drugs regularly due to the history of high blood pressure, or their emotions are not well controlled and they are often anxious and angry, which leads to frequent fluctuations in blood pressure, resulting in increased pressure inside the cerebral blood vessels, which constantly stimulates the meninges, and then neuralgia in the back of the head may occur, which may be accompanied by dizziness, nausea and other symptoms. 4. Brain tumor: due to the pressure of tumor on local brain tissue, resulting in edema of local brain tissue, easily induced by increased intracranial pressure, which may cause neuralgia in the back of the head, and may be accompanied by nausea, vomiting and other symptoms. Neuralgia in the back of the head may also be caused by other reasons, if the symptoms continue to get no better, you should consult a doctor as soon as possible, after a clear diagnosis of the cause, the doctor will guide the treatment and adjustment.