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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

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Related Experiment Video

Updated: Jul 5, 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

Association between migraine and headache attributed to stroke: a case-control study.

Katiuscia Nardi1, Lucilla Parnetti, Maria L Pieri

  • 1Neurologic Clinic, Department of Medical and Surgical Specialties and Public Health, University of Perugia, Italy.

Headache
|May 16, 2008
PubMed
Summary

Patients with a history of migraine are more likely to experience headache before an acute ischemic stroke. Cerebral ischemia may lower the pain threshold in these individuals, particularly with brainstem involvement.

Related Experiment Videos

Last Updated: Jul 5, 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

Area of Science:

  • Neurology
  • Stroke Medicine
  • Headache Disorders

Background:

  • Investigating the relationship between headache and acute stroke in patients with a history of migraine.
  • Understanding the prevalence and characteristics of stroke-related headaches.

Purpose of the Study:

  • To analyze headache occurrence in acute ischemic stroke patients with and without a history of migraine.
  • To identify specific headache features and stroke locations associated with migraine history.

Main Methods:

  • Case-control study involving 96 acute ischemic stroke patients with migraine history (M+) and 96 without (M-).
  • Exclusion of patients with secondary infarction.
  • Analysis of headache attributed to acute ischemic stroke.

Main Results:

  • Headache was significantly more frequent in M+ patients (P < .0001), often preceding stroke onset (P < .0001).
  • Migraine-like headache features were more common in M+ patients with ischemic stroke (P < .018).
  • Ischemic stroke showed a preferential brainstem location in M+ patients (P = .014).

Conclusions:

  • Headache attributed to stroke is highly prevalent in M+ patients, sometimes acting as a sentinel headache.
  • Cerebral ischemia appears to lower the head pain threshold more readily in migraine-susceptible individuals.
  • Brainstem infarction is frequently observed in M+ patients, correlating with increased headache frequency.