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Epilepsy ll: Types

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.

Seizures: Classification

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.
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Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:

Hypertension I: Introduction

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...

Encephalitis l: Introduction

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...

Seizures l: Introduction

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Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...

Increased Intracranial Pressure l: Introduction

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Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...

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Related Experiment Video

Updated: Jun 13, 2026

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

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

Published on: June 2, 2014

Headache in young age: classification of primary forms.

Licia Grazzi¹, Frank Andrasik

¹Headache Center, Foundation IRCCS Neurological Institute C.Besta, Via Celoria 11, 20133, Milan, Italy. licia.grazzi@istituto-besta.it

Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology

|May 14, 2010

Summary

Headaches, particularly migraine, are increasingly common in children and adolescents, impacting families significantly. This review covers key headache types and diagnostic challenges in young patients.

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Published on: June 2, 2014

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Published on: July 29, 2021

Area of Science:

Neurology
Pediatrics
Headache Medicine

Background:

Headache disorders are highly prevalent in childhood and adolescence.
Migraine and tension-type headache are leading reasons for pediatric consultations.
There is a documented rise in migraine incidence, including chronic migraine, among pediatric populations.

Purpose of the Study:

To review the primary diagnostic categories of headache in young individuals.
To discuss the applicability and limitations of current headache classification criteria for pediatric patients.

Main Methods:

Literature review of recent studies on pediatric headaches.
Analysis of diagnostic criteria for common headache types in youth.
Examination of challenges in classifying headaches in the pediatric age group.

Main Results:

Identified migraine and tension-type headache as most frequent diagnoses in young patients.
Confirmed increasing incidence rates for migraine and chronic migraine in children and adolescents.
Highlighted limitations of existing classification systems when applied to pediatric populations.

Conclusions:

Headache diagnosis and classification in young patients require careful consideration of age-specific factors.
Further refinement of diagnostic criteria may be needed to accurately capture headache presentations in pediatric populations.
Understanding these diagnostic nuances is crucial for effective patient management and family support.