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Epilepsy and Seizures: Overview

Epilepsy and Seizures: Overview

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.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...

Epilepsy ll: Types

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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.

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In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...

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

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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,...

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Mortality risks in new-onset childhood epilepsy.

Anne T Berg¹, Katherine Nickels, Elaine C Wirrell

¹Epilepsy Center, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA. atberg@luriechildrens.org

|June 12, 2013

Summary

Most excess deaths in children with epilepsy are not seizure-related. However, complicated epilepsy significantly increases mortality risk, with sudden unexpected death rates comparable to SIDS.

Keywords:

SUDEP children epilepsy mortality

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Area of Science:

Pediatric Neurology
Epilepsy Research
Mortality Studies

Background:

Epilepsy affects numerous children, with varying mortality risks.
Understanding causes of death, particularly seizure-related, is crucial for risk assessment.

Purpose of the Study:

To estimate seizure-related death risks in children with epilepsy.
To compare these risks with other common causes of mortality in this population.

Main Methods:

Combined data from four pediatric epilepsy cohorts.
Classified causes of death: seizure-related (including SUDEP), natural, non-natural, and unknown.

Main Results:

13 seizure-related deaths (10 SUDEP) occurred among 79 total deaths.
Overall death rate was 228 per 100,000 person-years, significantly higher in complicated epilepsy.
Seizure-related death rates were 43 overall, 122 in complicated, and 14 in uncomplicated epilepsy.

Conclusions:

Excess mortality in epilepsy is primarily due to non-seizure-related causes.
Complicated epilepsy carries a higher mortality risk than uncomplicated epilepsy.
SUDEP rates are comparable to SIDS; seizure-related deaths rival other causes in uncomplicated epilepsy.