Table 1.

Patient characteristics.

	SFN‐1	SFN‐2	Ctr‐1	Ctr‐2
Sex	Male	Male	Male	Male
Age	54	44	69	29
SFN etiology	Idiopathic	Idiopathic	N/A	N/A
Current pain intensity (on numeric rating scale 0–10)	8/10	4/10	N/A	N/A
Pain localization and character	Acral burning	Acral burning	N/A	N/A
pain attacks	Yes	Yes	N/A	N/A
Pain duration	6 years	6 years	N/A	N/A
IENFD at calf (fibers/mm)	2	2	7	8

Abbreviations: Ctr, control; IENFD, intraepidermal nerve fiber density; N/A, not applicable; SFN, small fiber neuropathy.