There are many reasons for unconscious head shaking, including idiopathic tremor, Parkinson’s disease, thyroid disease, psychological factors, etc. It is necessary to improve the cranial CT or nuclear magnetic, thyroid function and other tests to clarify the cause. 1, idiopathic tremor: also known as familial tremor, most patients have a family history of the disease, it is a common movement disorders, there will be the head, hands or other parts of the body unconscious shaking; 2, Parkinson’s disease: Parkinson’s disease and Parkinson’s syndrome can cause unconscious head shaking, usually accompanied by mental stress, fatigue, hunger symptoms will worsen. Unconscious shaking, in nervousness, fatigue, hunger, the symptoms will be aggravated; 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, slow movement, etc.; 3, hyperthyroidism: when the thyroid gland is hyperfunctional, the secretion of excessive thyroid hormone will lead to increased sympathetic excitability, muscle bundle tremor This will lead to hand tremor, panic, a small number of people may also appear head shaking; 4, psychological factors: such as anxiety disorders, patients may also appear head shaking, which has a certain relationship with their own anxiety, the mood improves, this symptom will also have some relief; 5, other: for example, alcohol withdrawal syndrome, cerebrovascular disease, drug toxicity, etc., may also make the patient appear unconscious head shaking performance. Other: for example, alcohol withdrawal syndrome, cerebrovascular disease, drug poisoning, etc., may also cause patients to experience unconscious head shaking.