Table 1. Number of entries for each complication category.
CSF: cerebrospinal fluid.
| Characterization | Complications | Number of complications |
| Procedural (101) | Infections | 36 |
| Cerebral bleeds | 14 | |
| Lead placement | 11 | |
| Cerebral edema | 10 | |
| Wound dehiscence | 8 | |
| Seizure | 5 | |
| CSF leak | 3 | |
| Pneumocephalus | 2 | |
| Inadequate stimulation | 2 | |
| Other trauma | 10 | |
| Device-related malfunction (49) | Lead fracture | 5 |
| Intrinsic device failure | 14 | |
| Migration | 19 | |
| Impedance | 11 | |
| Stimulation-related complications (31) | Inadequate stimulation and pain relief | 10 |
| Worsening Parkinson symptoms | 8 | |
| Seizure | 6 | |
| Focal neurological side effects | 5 | |
| Burning at incision site | 1 | |
| Lumbosciatica | 1 | |
| Other patient complaints (13) | Neurological symptoms | 8 |
| Pain at site | 5 | |
| Other (27) | Multifarious | 21 |
| External trauma | 6 |