When a patient experiences involuntary head shaking, the first thing to consider is whether it is alcohol or drug intoxication. Usually, if patients drink alcohol for years or take certain drugs for a long time, it will cause excitation or inhibition of the central nervous system, and thus involuntary shaking of the head will occur. In addition, it is not excluded that the head shaking is caused by disease factors, mainly in the following cases: 1. Seizures: with sudden onset and stop, transient transient, self-limiting and other characteristics. Simple partial seizures can be manifested as involuntary shaking of the head, generally lasting less than 1 minute, often accompanied by panic, chest tightness, salivation and other symptoms, the seizure period to the EEG can be diagnosed; 2, Parkinson’s disease and Parkinson’s syndrome: common in middle-aged and elderly people, symptoms vary from person to person, can be manifested as resting tremor of the head, motor retardation and muscle ankylosis, postural balance disorders in patients in the middle and late stages; 3, idiopathic tremor Idiopathic tremor: Idiopathic tremor mainly manifests as involuntary movements or tremors of the head, face and trunk, which is a kind of involuntary, rhythmic tremor of the muscles; 4, hyperthyroidism: mostly seen in young patients, manifesting as involuntary head tremors, accompanied by easy agitation, irritability, tachycardia, fatigue, fear of heat, excessive sweating, weight loss, hyperphagia and other symptoms; 5, other: for example, severe liver, heart and lung diseases, sometimes can cause head shaking, which requires perfecting ECG, cardiac ultrasound, liver and kidney function, chest X-ray, lung function and other examinations.