TABLE 1.
Baseline characteristics of the 193 patients with drug‐resistant neuropathic pain.
| Variables | Values |
|---|---|
| Age, years (mean ± SD) | 56.2 ± 13.6 |
| Male sex, % (n) | 52.8 (102) |
| Pain duration, years (mean ± SD) | 6.4 (±6.9) |
| Pain laterality, % (n) | |
| Bilateral | 6.2 (12) |
| Right | 44.6 (86) |
| Left | 49.2 (95) |
| Pain topography, % (n) | |
| Hemibody | 47.2 (91) |
| Lower limb | 20.7 (40) |
| Upper limb | 18.7 (36) |
| Face/Neck | 7.3 (14) |
| Trunk | 3.1 (6) |
| Others | 3.1 (6) |
| Level of lesion, % (n) | |
| Central | 75.7 (146) |
| Spinal cord | 30.8 (45) |
| Brainstem | 11.0 (16) |
| Thalamus | 30.1 (44) |
| Lenticular | 6.8 (10) |
| Cortex | 18.5 (27) |
| Others | 2.7 (4) |
| Peripheral | 23.8 (46) |
| Phantom limb | 6.5 (3) |
| Cranial | 23.9 (11) |
| Radicular | 2.2 (1) |
| Plexus | 26.1 (12) |
| Nerve trunk | 23.9 (11) |
| Sensory fibres | 17.4 (8) |
| Mixed | 0.5 (1) |
| Aetiology, % (n) | |
| Central, n = 146 | |
| Post‐stroke pain | 57.5 (84) |
| Myelopathy | 6.2 (9) |
| Multiple sclerosis | 5.5 (8) |
| Traumatic/Surgical nerve | 4.1 (6) |
| Syrinx | 4.1 (6) |
| Oncology | 3.4 (5) |
| Infarct | 3.4 (5) |
| Others | 6.8 (10) |
| Not found | 8.9 (13) |
| Peripheral, n = 46 | |
| Traumatic/Surgical nerve | 41.3 (19) |
| Trigeminal neuralgia | 17.4 (8) |
| Sensory polyneuropathy | 13.0 (6) |
| Oncology | 8.7 (4) |
| Postherpetic neuralgia | 6.5 (3) |
| Others | 13.0 (6) |
| Pain intensity (NRS), /10 (mean ± SD) | 6.3 ± 2.1 |
| Global score NPSI, /100 (mean ± SD) | 36.6 ± 18.0 |
| Superficial burning pain, /10 (mean ± SD) | 4.2 ± 3.5 |
| Deep pain, /10 (mean ± SD) | 3.3 ± 2.9 |
| Paroxysmal pain, /10 (mean ± SD) | 2.8 ± 2.8 |
| Evoked pain, /10 (mean ± SD) | 3.4 ± 3.0 |
| Paresthesia/dysesthesia, /10 (mean ± SD) | 4.6 ± 2.9 |
| Sub‐score NPSI the most painful component, % (n) | |
| Superficial burning pain | 38.0 (41) |
| Deep pain | 13.9 (15) |
| Paroxysmal pain | 5.6 (6) |
| Evoked pain | 13.9 (15) |
| Paresthesia/dysesthesia | 28.7 (31) |