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Correlations between changes in intra-epidermal nerve fibre density and pain relief. Decrease in pain scores in spontaneous pain (A) and cold evoked pain (B) were correlated with changes in density of PGP 9.5 nerve fibres 3 months after the application of Capsaicin 8% patch, Spearman test; p values were respectively p = 0.027 and p = 0.019.
