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Disorders of the Skeletal Muscle01:28

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
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Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
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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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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
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Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
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Dissection of the Transversus Abdominis Muscle for Whole-mount Neuromuscular Junction Analysis
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Segmental neuromyotonia.

Ajay Panwar1, Vivek Junewar1, Ritesh Sahu1

  • 1Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.

Journal of Neurosciences in Rural Practice
|July 14, 2015
PubMed
Summary
This summary is machine-generated.

This study presents a rare case of segmental neuromyotonia affecting a single limb. Prompt diagnosis and treatment with phenytoin successfully managed the patient

Keywords:
Myokymiamyotonianeuromyotonia

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Area of Science:

  • Neurology
  • Clinical Electrophysiology
  • Movement Disorders

Background:

  • Unilateral focal neuromyotonia is infrequently documented, typically affecting distal extremities like fingers or extraocular muscles.
  • Neuromyotonia, characterized by continuous muscle fiber activity, can manifest in various forms.

Observation:

  • A 20-year-old male presented with intermittent tightness in his right upper limb.
  • Electromyography (EMG) demonstrated myokymic and neuromyotonic discharges in both proximal and distal muscles of the affected limb.

Findings:

  • The case presented an atypical pattern of segmental neuromyotonia involving two contiguous areas within a single limb.
  • Phenytoin therapy proved effective in alleviating the patient's symptoms.

Implications:

  • This report highlights an unusual presentation of neuromyotonia, expanding the spectrum of its clinical manifestations.
  • Recognizing such atypical patterns is crucial for accurate diagnosis and prompt management of neuromyotonia.