Related Experiment Video
Updated: Oct 2, 2026

Three-dimensional Imaging of Nociceptive Intraepidermal Nerve Fibers in Human Skin Biopsies
Published on: April 29, 2013
Cutaneous sensory nerve fibers are decreased in number after peripheral and central nerve damage
Joanna Wallengren1, Eva Tegner, Frank Sundler
1Department of Dermatology, University Hospital, Lund, Sweden.
Abstract:
Two dermatologic patients displaying peripheral and central nerve damage, respectively, are described. Cutaneous nerve fibers in both patients were studied in skin biopsy specimens taken from neuropathic areas and from the contralateral side, immunocytochemistry being applied to a pan-neuronal marker, a protein gene-product (PGP 9.5). One of the patients, suffering from compression of the ulnar nerve, had dyshidrotic eczema of the hands that was absent on areas of skin that were neuropathic. The cutaneous innervation (most of which was sensory) was reduced by 50% in the neuropathic area as compared with the contralateral side. The other patient had unilateral pruritus on the parethic side after a stroke. The cutaneous innervation of that side was reduced by 80% as compared with the other side. It seems that peripheral sensory innervation is a prerequisite for inflammation, whereas spontaneous itching may emanate from a central nervous system disorder such as a stroke and continue on in partly denervated skin.
Related Concept Videos
Sensory Functions of the Skin
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Diabetic Neuropathy
Somatosensation
Local Anesthetics: Differential Sensitivity of Nerve Fibers
Neurogenesis and Regeneration of Nervous Tissue
Peripheral Nervous System: Ganglia and Nerves
Nerves
The nerve is a bundle of axons that serves as the communication highway in the PNS. Each nerve is ensheathed in a protective layer of connective tissue called the epineurium. This outermost layer safeguards the nerve and supports the...
