Peripheral neuropathy is known to produce a wide variety of changes in TRPV1 expression in sensory ganglia (Hudson et al., 2001; Fukuoka et al., 2002; Kanai et al., 2005; Biggs et al., 2007; Christoph et al., 2007; Kim et al., 2008; Vilceanu et al., 2010; Urano et al., 2012; Hirai et al., 2014). This evidence concerns the gene TRPV1 and peripheral neuropathy.