The problem of involuntary head shaking is considered to be caused by idiopathic tremor. The main manifestation of idiopathic tremor is postural tremor, an involuntary but rhythmic tremor of the limb muscles, which may affect the head or the facial muscles of the upper limbs, and the disease progresses slowly. Involuntary head shaking may also be a neurological tic disorder, which may occur after emotional stress or extreme exertion or mental stimulation, and may be a manifestation of neurosis or other neurological factors that cause involuntary muscle tremors. If it occurs frequently or persists without remission, it is recommended to consult a neurologist for relevant tests to clarify the cause.