Table 1 Overview of sensory small fibre tests and correlations. All data presented from the leg.
| Â | Â | Patients | Controls | Correlations |
|---|---|---|---|---|
Contact heat evoked potentials | Latency (ms) | 509 ± 0.015 | 525 ± 0.017 | - |
|  | Amplitude (μV) | 3.63 ± 0.85 | 11.7 ± 1.95 | • PGP 9.5 and TRPV1 IEF • Flare area |
Skin biopsy (IEF/mm) | PGP 9.5 | 3.76 ± 0.48 | 6.52 ± 1.43 | • Flare area • Evoked potential amplitude |
|  | TRPV1 | 3.45 ± 0.52 | 5.7 ± 1.4 | • Evoked potential amplitude |
Skin flare | Area (cm2) | 12.03 ± 0.90 | 18.14 ± 2.28 | • PGP 9.5 IEF • Evoked potential amplitude |
QST (°C change) | Warm | 8.2 ± 0.8 | 6.3 ± 0.3 | - |
|  | Heat | 13.97 ± 0.6 | 10.1 ± 0.2 | - |
|  | Cool | 3.6 ± 0.6 | 2.1 ± 0.1 | - |