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Related Concept Videos

Myasthenia Gravis: Diagnostic Tests01:15

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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
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Myocarditis II: Clinical Features and Diagnostic Tests01:27

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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Acute Pyelonephritis II: Diagnostic Studies and Management01:28

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Updated: Dec 15, 2025

A Simple Approach to Induce Experimental Autoimmune Neuritis in C57BL/6 Mice for Functional and Neuropathological Assessments
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Acute Flaccid Myelitis: Current Status and Diagnostic Challenges.

Xiang Fang1, Ruksana Huda2

  • 1Department of Neurology, University of Texas Medical Branch, Galveston, TX, USA. sxfang@utmb.edu.

Journal of Clinical Neurology (Seoul, Korea)
|July 14, 2020
PubMed
Summary

Acute flaccid myelitis (AFM) is a polio-like condition affecting children, often linked to enterovirus infections. This overview clarifies AFM

Keywords:
acute diseaseenterovirusmyelitisparalysis

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Pediatrics

Background:

  • Acute flaccid myelitis (AFM) is a sudden-onset, polio-like neuromuscular disability primarily affecting young children.
  • There is a concerning increase in confirmed AFM cases globally, often associated with nonpolio enterovirus infections.
  • AFM presents a significant clinical challenge and public health concern due to its increasing incidence.

Purpose of the Study:

  • To provide a concise overview of current understanding of Acute Flaccid Myelitis (AFM).
  • To delineate the clinical features distinguishing AFM from Acute Flaccid Paralysis (AFP) and other neurological disorders.
  • To discuss diagnosis, pathology, pathogenesis, and therapies for AFM.

Main Methods:

  • Literature review and synthesis of current research on AFM.
  • Comparative analysis of clinical phenotypes, pathology, and diagnostic criteria for AFM and AFP.
  • Review of proposed pathogenetic mechanisms and therapeutic strategies.

Main Results:

  • AFM is a subset of AFP characterized by specific spinal cord gray matter lesions on MRI.
  • AFM impacts spinal cord, brainstem, or motor neuron function, mimicking AFP clinically.
  • Distinct features aid in differentiating AFM from AFP and other neurological conditions.

Conclusions:

  • AFM diagnosis relies on distinguishing its unique features from AFP and other neurological diseases.
  • Understanding the pathogenesis is crucial for developing effective therapies for AFM.
  • Continued research is needed to address the growing challenge of AFM in pediatric populations.