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Related Concept Videos

Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular tachycardia.
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Narcolepsy01:07

Narcolepsy

Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
Seizures: Classification01:13

Seizures: Classification

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.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Sleep-Wake Cycles01:24

Sleep-Wake Cycles

Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
NREM Sleep
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Updated: May 30, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
10:39

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache

Published on: June 2, 2014

Syncopal migraine.

David Curfman1, Michael Chilungu, Robert B Daroff

  • 1The Autonomic Laboratory, Neurological Institute, University Hospitals Case Medical Center, Cleveland, OH 44106, USA.

Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society
|August 18, 2011
PubMed
Summary
This summary is machine-generated.

Nearly one-third of recurrent syncope patients experience syncopal migraine, a condition resembling migraine more than reflex syncope. Anti-migraine treatments effectively reduced syncope in half of these patients.

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Area of Science:

  • Neurology
  • Headache Medicine

Background:

  • Syncope is a transient loss of consciousness.
  • A subset of syncope patients report concurrent migraine headaches.
  • Some patients with syncope and headache respond to anti-migraine therapies.

Purpose of the Study:

  • To determine the frequency of migrainous features in syncope patients.
  • To propose clinical criteria for identifying syncope with a potential migrainous mechanism.

Main Methods:

  • Retrospective, questionnaire-based study.
  • Developed syncopal migraine criteria based on International Classification of Headache Disorders II (ICHD-II).
  • Compared 248 recurrent syncope subjects (stratified by headache presence) with 199 migraine patients.

Main Results:

  • Approximately 33% of recurrent syncope subjects met criteria for syncopal migraine.
  • Syncopal migraine patients shared characteristics (age, gender, autonomic testing, comorbidities) with migraineurs.
  • Syncopal migraine was associated with longer syncope duration and recovery.
  • Anti-migraine medications reduced syncope by 50% in affected patients.

Conclusions:

  • Syncope may frequently have a migrainous origin, more so than previously recognized.
  • Proposed criteria can help identify patients with potential syncopal migraine.
  • Syncopal migraine shows closer epidemiological links to migraine than to reflex syncope.