Related Experiment Video
Updated: Jul 9, 2026
02:22
Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
Published on: April 12, 2024
Gelastic seizures: not always hypothalamic hamartoma
Christina S Cheung1, Andrew G Parrent, Jorge G Burneo
1Epilepsy Programme, Department of Clinical Neurological Sciences, University of Western Ontario, London, Canada.
Epileptic Disorders : International Epilepsy Journal with Videotape
|December 14, 2007
Summary
Gelastic seizures, or "laughing seizures," can stem from focal cortical dysplasia, not just hypothalamic hamartomas. Surgical removal of the dysplasia successfully stopped seizures in one patient.
Area of Science:
- Neurology
- Epileptology
- Neuroimaging
Background:
- Gelastic seizures are commonly linked to hypothalamic hamartomas.
- Differentiating causes of gelastic seizures can be challenging, especially when electroencephalography (EEG) is inconclusive.
Observation:
- A 29-year-old woman experienced gelastic seizures.
- Initial assessments suggested a possible neurological origin beyond typical hypothalamic hamartomas.
Findings:
- Focal cortical dysplasia in the frontal lobe was identified as the cause of the gelastic seizures.
- Magnetic Resonance Imaging (MRI) and Single-Photon Emission Computed Tomography (SPECT) were crucial in localizing the lesion.
- Resection of the frontal cortical dysplasia resulted in complete seizure freedom for the patient.
Implications:
- This case highlights that focal cortical dysplasias are an important differential diagnosis for gelastic seizures.
- Advanced neuroimaging techniques like MRI and SPECT are vital for accurate localization when EEG is insufficient.
- Surgical intervention targeting the cortical dysplasia can be a highly effective treatment for intractable gelastic seizures.
Related Concept Videos
01:13Seizures: 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:
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:
01:20Seizures l: Introduction
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,...
01:19Seizures ll: Types
Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
01:22Epilepsy 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.
01:24Epilepsy 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...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
01:18Antiepileptic Drugs: GABAergic Pathway Potentiators
γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...