Inclusion Criteria:  Male or female; Age 18-80; Patients clinically diagnosed with functional movement disorders according to the Fahn-Williams criteria; Patients who are willing to provide information such as disease history and cooperate with physical examination and examination;  Exclusion Criteria:  Patients with definite organic dyskinesia; There are other causes of dyskinesia such as fatigue, pain, hyperthyroidism, chronic alcoholism, and drug use; Those who suffer from serious physical diseases and are unable to cooperate; Those who do not cooperate or refuse to sign informed consent.