Antihistamine - sensitive itches have been shown to activate nerve fibres called unmyelinated C - fibres. (newscientist.com)
Electrophysiological testing to measure peripheral nerve conduction properties is not a viable alternative because current methods lack the sensitivity required to detect damage to small, unmyelinated fibers, especially in early stages of disease. (sciencedaily.com)
The 5 - HT3 subtype of serotonin receptor contributes to nociceptive processing via a novel subset of myelinated and unmyelinated nociceptors (jneurosci.org)