Table 2.

Skin biopsy data.

Parameter	Contralateral side (SD)	PHN side (SD)
Nerve fiber density (epidermis, PGP9.5 positive) [IENF/mm]	10.32 (5.98)	8.25 (6.14)
Nerve fiber density (subepidermis, Nav1.7 positive) [SENF/mm]	1.19 (1.84)	0.98 (1.78)
Nerve fiber density (subepidermis, PGP9.5 positive) [SENF/mm]	3.47 (2.69)	2.85 (2.75)
Relative nerve fiber density (subepidermis, Nav1.7 positive) [%]	33.83	34.70
Upper subepidermal keratinocyte Nav1.7 (average pixel intensity)	102.20 (33.01)	102.45 (32.66)

IENF, intraepidermal nerve fibers; Nav, voltage-gated sodium channel; PGP, protein gene product; SD, standard deviation; SENF, subepidermal nerve fibers.