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Related Concept Videos

Seizures: Classification01:13

Seizures: Classification

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Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
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Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
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Classification of Skeletal Muscle Relaxants01:28

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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.
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
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Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
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Spasmolytic Agents: Chemical Classification01:29

Spasmolytic Agents: Chemical Classification

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Spasmolytic agents are drugs used to alleviate muscle spasms and spasticity. They can be categorized into different chemical groups based on their mechanisms of action. Centrally acting spasmolytics primarily affect the spinal cord, while others directly target skeletal muscle cells.
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Vascular Spasm01:16

Vascular Spasm

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Centrally Acting Muscle Relaxants: Therapeutic Uses01:24

Centrally Acting Muscle Relaxants: Therapeutic Uses

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Centrally acting muscle relaxants reduce muscle tone and tension by interfering with the postsynaptic reflexes in the central nervous system.
Centrally acting drugs are classified into spasmolytic and antispasmodic drugs. Spasmolytic drugs such as baclofen, diazepam, and tizanidine inhibit spinal motor neurons and decrease muscle tone. Spasmolytic drugs are administered for severe and chronic spasms due to multiple sclerosis, cerebral palsy, stroke, and spinal cord and muscle injuries. However,...
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Related Experiment Video

Updated: Nov 28, 2025

Behavioral Characterization of Pentylenetetrazole-induced Seizures: Moving Beyond the Racine Scale
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Behavioral Characterization of Pentylenetetrazole-induced Seizures: Moving Beyond the Racine Scale

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Three different scenarios for epileptic spasms.

Lucia Fusco1, Domenico Serino2, Marta Elena Santarone1

  • 1Intensive Neurological Diagnostic Unit, Neuroscience Department, Bambino Gesù Children's Hospital, Rome, Italy.

Epilepsy & Behavior : E&B
|November 28, 2020
PubMed
Summary

Epileptic spasms (ES) present in three distinct childhood epilepsy scenarios: West Syndrome, Developmental and Epileptic Encephalopathies, and Focal Epilepsies. Early diagnosis and appropriate management are crucial for these severe seizure types.

Keywords:
Developmental Epileptic EncephalopathyEpilepsy SurgeryEpileptic SpasmsInfantile SpasmsWest Syndrome

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Area of Science:

  • Pediatric Neurology
  • Clinical Electrophysiology
  • Epileptology

Background:

  • Epileptic spasms (ES) are characteristic seizures often indicative of severe childhood epilepsy syndromes.
  • These spasms are frequently associated with significant Electroencephalogram (EEG) abnormalities.
  • Understanding the specific context of ES is vital for effective management.

Purpose of the Study:

  • To delineate the three primary scenarios in which Epileptic Spasms (ES) occur in children.
  • To provide a framework for the diagnostic and therapeutic workup of ES.
  • To highlight the varying treatment efficacies and considerations for each ES scenario.

Main Methods:

  • Classification of ES into three distinct clinical scenarios based on EEG patterns and patient history.
  • Review of typical electroclinical features and treatment responses for each scenario.
  • Consideration of diagnostic tools and therapeutic strategies, including surgery for drug-resistant cases.

Main Results:

  • Scenario 1: West Syndrome (WS) with hypsarrhythmic EEG, often responsive to ACTH, steroids, or vigabatrin.
  • Scenario 2: Developmental and Epileptic Encephalopathies (DEEs) with pathological EEG, often resistant to standard therapies.
  • Scenario 3: Focal Epilepsies (FEs) associated with focal lesions, where standard ES treatments may be ineffective, and surgery is an option.

Conclusions:

  • Epileptic spasms can be accurately categorized into West Syndrome, Developmental and Epileptic Encephalopathies, or Focal Epilepsies.
  • While some ES forms are treatable, others present significant therapeutic challenges.
  • Despite knowledge gaps, current tools allow for appropriate framing and management of ES.