The nervous system is responsible for receiving and processing the information that comes from the environment around us and from inside the body[1]. Thus, it directs conscious voluntary actions, while controlling most of our involuntary internal functions, such as breathing. How does it accomplish all of this?
Peripheral neuropathy is one of the most common neurological conditions. Currently, more than 100 types of peripheral neuropathy have been defined, based on their symptoms and prognosis[3].

Neurons transmit information by sending and receiving electrical signals or nerve impulses throughout the nervous system.[1].
From the anatomical point of view, the nervous system is divided into[1]:
Peripheral neuropathy arises from the degeneration of the peripheral nervous system (PNS), leading to the impairment of nerves responsible for transmitting signals between the brain, spinal cord, and the rest of the body. Consequently, the communication between the central nervous system (CNS) and the rest of the body experiences distortion or disruption.[3]
So, injuries or damage to the PNS can be caused at different levels[4]:1. How does the nervous system work? – InformedHealth.org – NCBI Bookshelf. 2016. https://www.ncbi.nlm.nih.gov/books/NBK279390/ (accessed June 23, 2021).
2. Bhatheja K, Field J. Schwann cells: Origins and role in axonal maintenance and regeneration. Int J Biochem Cell Biol 2006;38:1995–9. doi:10.1016/j.biocel.2006.05.007.
3. Neuropatía periférica | NINDS Español. https://espanol.ninds.nih.gov/es/trastornos/forma-larga/neuropatia-peri… (accessed June 23, 2021).
4. Casademont Pou J. Neuropatías: concepto, manifestaciones clínicas, clasificación, diagnóstico, pruebas complementarias y estrategias terapéuticas. Med – Programa Form Médica Contin Acreditado 2003;8:5373–8. doi:10.1016/s0304-5412(03)70997-4.
61. Huebner EA, Strittmatter SM. Axon regeneration in the peripheral and central nervous systems. Results Probl Cell Differ 2009;48:339–51. doi:10.1007/400_2009_19.