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Related Concept Videos

Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

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Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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Peripheral Nervous System: Ganglia and Nerves01:24

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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
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...
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Nociception01:44

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Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
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Related Experiment Video

Updated: Jun 27, 2025

A Simple Approach to Induce Experimental Autoimmune Neuritis in C57BL/6 Mice for Functional and Neuropathological Assessments
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Focal inflammatory neuropathies.

Rocio Vazquez Do Campo1, P James B Dyck2

  • 1Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, United States.

Handbook of Clinical Neurology
|May 2, 2024
PubMed
Summary
This summary is machine-generated.

This chapter reviews focal neuropathies caused by autoimmune and inflammatory conditions. It covers the presentation, diagnosis, and treatment of various focal nerve disorders.

Keywords:
Brachial plexopathyFocal CIDPFocal neuropathyInfectious neuropathyInflammatory neuropathyMicrovasculitisPostsurgical neuropathyRadiculoplexus neuropathySarcoid neuropathy

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Area of Science:

  • Neurology
  • Immunology
  • Pathology

Background:

  • Focal neuropathies involve specific nerve roots, plexus, or peripheral nerves.
  • Autoimmune and inflammatory mechanisms are key contributors to these focal neurological deficits.

Purpose of the Study:

  • To review the clinical presentation, diagnosis, and treatment of focal neuropathies.
  • To consolidate information on neuropathies associated with autoimmune, inflammatory, infectious, and neoplastic processes.

Main Methods:

  • Literature review of focal neuropathies.
  • Analysis of clinical presentations, diagnostic criteria, and therapeutic strategies.
  • Categorization based on underlying etiology (autoimmune, inflammatory, infectious).

Main Results:

  • Detailed review of focal autoimmune demyelinating neuropathies.
  • Discussion of focal nonsystemic vasculitic disorders including diabetic and nondiabetic radiculoplexus neuropathies, postsurgical inflammatory neuropathy, and neuralgic amyotrophy.
  • Examination of focal neuropathies linked to sarcoidosis, bacterial, and viral infections.

Conclusions:

  • Accurate diagnosis and timely treatment are crucial for managing focal neuropathies.
  • Understanding the diverse etiologies is essential for effective patient management.
  • Further research into specific inflammatory and autoimmune neuropathies is warranted.