Seizure Disorder

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What is Seizure Disorder

There are two types of seizures: generalized seizures and focal seizures.

Generalized seizures affect both hemispheres of the brain and are classified as an absent seizure or a tonic-clonic seizure. Absent seizures, formally called “silent” seizures typically result in rapid eye blinking and staring into space. Some patients may not realize a seizure is occurring, or they may occur during sleep. Tonic-clonic seizures, formally called “Grand Mal” seizures are characterized by muscle jerking, muscle spasming, falling to the ground, and in serious cases, loss of consciousness.

Focal seizures are localized to one particular region of the brain. These seizures may result in mild muscle twitching or a strange taste in the mouth or strange smell. Typically, people diagnosed with epilepsy experience focal seizures.

Common Symptoms

Symptoms of Seizure Disorder may include any number of the following:

  • Rapid eye movement

  • Appearing “glazed over”

  • Involuntary muscle jerks/spasms

  • Loss of consciousness

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Impacted Areas of the Brain

SPECT imaging is able to identify focal seizures. In imaging, a seizure foci is characterized by extremely increased blood flow, most frequently in the frontal and temporal lobes. A quantitative electroencephalogram (qEEG) is the most appropriate imaging modality to diagnose a seizure.

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