Characteristics of the 72 Patients with Clinical Polyneuropathy and Normal Large Fiber Tests According to Presence and Nature of Small Fiber Neuropathy.

*P values for dichotomous variables were calculated with the χ2 test and t-test was used for continuous variables.For VPT, the normal values are highly age-dependent, but values ≤5 are normal in the finger and ≤15 Volts are normal in the toe. For VPT, data are available in 42 patients with normal IENFD and on 24 patients with SFSN.Cut-offs for quantitative sensory thresholds are age-dependent although, generally a normal CDT would be ≥25°C. The normal values for heat pain are ≤50°C.