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7 Possible Causes for Focal Discharges with Secondary Generalization

  • Epilepsy

    Epilepsy is a brain disorder in which a person has repeated seizures over time. Seizures are episodes of uncontrolled and abnormal firing of brain cells that may cause changes in attention or behavior. Epilepsy occurs when changes in the brain cause it to be too excitable or irritable. As a result, the brain sends[…][medlineplus.gov]

  • Absence Seizure

    More relevant to secondarily (or focal onset) generalized absence seizures is “secondary bilateral synchrony,” which refers to bilateral and synchronous 2 to 4 Hz EEG discharges[medlink.com] Focal onset generalized absence seizures may manifest either as typical (with 2.5 Hz spike-wave discharges) or atypical (with Lennox-Gastaut syndrome manifest with atypical[medlink.com] Contrary to secondary bilateral synchrony, primary bilateral synchrony manifests with more rapid symmetrical and synchronous generalized spike-wave discharges caused by a[medlink.com]

  • Idiopathic Generalized Epilepsy

    In order to differentiate IGE from focal epilepsy with rapid secondary generalization, physical examination, EEG studies (interictal EEG, video EEG) or radiographic tests[symptoma.com] Fast generalized spike or polyspike-wave discharges may be observed during the myoclonic episodes. The use of video-EEG is recommended for their recording.[symptoma.com]

  • Epilepsy with Continuous Spike-and-Slow-Waves during Sleep

    […] synchronies as a mechanism for the generalization of previously focal epileptic discharges.[medlink.com] Overview This article emphasizes the clinical and EEG features of epileptic encephalopathy with continuous spike-and-wave during sleep and the occurrence of secondary bilateral[medlink.com]

  • Sturge-Weber Syndrome

    Bilateral dysfunction observed in Sturge-Weber syndrome may result in an increased capability of focal discharges to generate synchronous epileptiform activity leading to[ncbi.nlm.nih.gov] […] an increased incidence of generalised seizures, most probably via a mechanism of secondary bilateral synchrony.[ncbi.nlm.nih.gov]

  • Oculocerebrorenal Syndrome

    In monitoring the disease, the manifestation of the seizures as atonic seizures accompanied by focally initiated secondary generalized epileptic discharges is a finding previously[ncbi.nlm.nih.gov]

  • Mega-Cisterna Magna

    EEG recording during the episode shows focal discharge as sharp and spike waves in the frontal and temporal lobes at both hemispheres with secondary generalization.[scirp.org] His EEG recording during the episode shows focal discharge as sharp and spike waves in the frontal and temporal lobes at both hemispheres with secondary generalization, while[scirp.org] In our case EEG showed shows focal discharge as sharp and spike waves in the frontal and temporal lobes at both hemispheres with secondary generalization, while in between[scirp.org]

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