| Ballism | |
| Asymptomatic bleeding detected on MRI | |
| Intracerebral hemorrhage | |
| Head trauma (fall in hospital) | |
| Contusion | |
| Dementia | |
| Delirium | |
| Seizures | |
| General health complications | |
| Wound healing problem | |
| Related to device | |
| Skin erosion with infection | |
| Stimulator repositioning | |
| Related to DBS or disease | |
| Disabling dyskinesia | |
| Weight gain | |
| Eyelid-opening apraxia | |
| Depression | |
| Apathy | |
| Impulsive aggressive behaviour | |
| Hypomania | |
| Tetanic muscle contraction | |
| Dysarthria | |
| Hilarity | |
| Hallucinations | |
| Psychosis | |
| Dementia | |
| Suicide attempts | |
| Death during follow-up: 3 | |