There are many causes of unconscious head shaking, including idiopathic tremor, Parkinson’s disease, thyroid disease, psychological factors, etc. It is necessary to improve cranial CT or MRI, thyroid function and other examinations to clarify the causes. 1, idiopathic tremor: also known as familial tremor, most patients have a family history of the disease, is a common movement disorder, will appear in the head, hands or other parts of the body Unconscious shaking, the symptoms will worsen when nervous, fatigue, hunger; 2, Parkinson’s disease: Parkinson’s disease and Parkinson’s syndrome can cause unconscious head shaking, usually accompanied by other symptoms, such as limb stiffness, motor retardation, etc.; 3, hyperthyroidism: when the thyroid gland is hyperactive, the secretion of excessive thyroid hormone will lead to increased sympathetic excitability, muscle bundle tremor This may lead to hand trembling and panic, and a few people may also experience head shaking; 4, psychological factors: patients with anxiety disorders, for example, may also experience head shaking, which is related to their own anxiety, and this symptom will be relieved after their emotions improve; 5, other: for example, alcohol withdrawal syndrome, cerebrovascular disease, drug poisoning, etc., may also cause patients to experience unconscious head shaking The performance of the patient.