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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.
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:

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...

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Related Experiment Video

Updated: Feb 16, 2026

Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins

Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins

Published on: August 15, 2017

Envenomation Seizures.

Ghulam Abbas Kharal¹, Richard Ryan Darby¹, Adam B Cohen¹

¹Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.

The Neurohospitalist

|December 26, 2017

Summary

This summary is machine-generated.

Insect stings rarely cause seizures. This case study details a patient experiencing confusion and seizures 24 hours post-yellow jacket sting, likely due to venom toxicity and anaphylaxis.

Keywords:

anaphylaxis bee sting epilepsy global health seizures wasp yellow jacket

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Area of Science:

Toxicology
Neurology
Allergy and Immunology

Background:

Insect sting envenomation is a common occurrence.
Seizures are an uncommon neurological complication of insect stings.

Purpose of the Study:

To report a rare case of delayed-onset seizures following a yellow jacket sting.
To explore the potential neurotoxic effects of wasp venom.

Main Methods:

Case report of a patient presenting with neurological symptoms after an insect sting.
Clinical evaluation including neurological and dermatological assessments.
Exclusion of infectious and structural causes for the neurological presentation.

Main Results:

The patient developed confusion and seizures 24 hours after a yellow jacket sting.
Symptoms resolved rapidly.
No infectious or structural abnormalities were identified.
Dermatological and orbital features were noted.

Conclusions:

The neurotoxic effects of yellow jacket venom, potentially involving anaphylaxis, are implicated in this rare presentation of delayed seizures.
This case highlights the importance of considering envenomation in the differential diagnosis of unexplained neurological symptoms.