| Cardinal manifestations |
| Tremor |
| Bradykinesia |
| Rigidity |
| Postural instability |
| Other motor features |
| Craniofacial |
| Hypomimia (masked facial expression) |
| Decreased eye blinking |
| Speech disturbances (hypokinetic dysarthria, hypophonia) |
| Dysphagia |
| Sialorrhea |
| Visual |
| Blurred vision |
| Impaired contrast sensitivity |
| Hypometric saccades |
| Impaired vestibuloocular reflex |
| Impaired upward gaze and convergence |
| Lid apraxia |
| Musculoskeletal |
| Micrographia |
| Dystonia |
| Myoclonus |
| Stooped posture |
| Kyphosis |
| Scoliosis |
| Difficulty turning in bed |
| Gait |
| Shuffling, short-stepped gait |
| Freezing |
| Festination |
