Parkinson’s disease, once known as: Parkinson’s disease, tremor palsy. I. Symptoms Motor retardation is a mandatory symptom for Parkinson’s disease patients, while tremor (e.g. hand tremor, leg tremor, jaw tremor, head and neck tremor) can either be a concomitant symptom or not present. In other words, tremor is not a specific symptom of Parkinson’s disease. In addition to bradykinesia and tremor, people with Parkinson’s disease may have many other features, including difficulty getting up, panicky and unsteady walking, small fragmented steps, reduced swing of the hands while walking, dull expressions, and shaky speech. Other symptoms such as excessive oil production on the face, sleep disturbances, back pain, constipation, decreased sense of smell, and wet, cold, sweaty hands are also associated with Parkinson’s disease. Frequent sleep with vivid dreams, shouting and hand dancing is known as fast moving eye sleep disorder, and people with this condition have a high chance of developing Parkinson’s disease in the future. It has been found after research that about 80% of people with Parkinson’s disease already had fast-acting eye sleep disorder 15-20 years before they were diagnosed with Parkinson’s disease. Second, mortality The 6-year mortality rate of Parkinson’s disease patients (66%) is higher than that of chronic heart failure (50.9%), chronic obstructive pulmonary disease (44.7%), ischemic heart disease (32.5%), stroke or transient ischemic attack (52.5%). This suggests that Parkinson’s disease is not as “benign” as once thought; it is a devastating and life-threatening disease. The mortality rate is higher in Parkinson’s disease with dementia. Good treatment can significantly prolong the survival of people with Parkinson’s disease.