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539 Possible Causes for Spike-and-Slow-Waves

  • Epilepsy

    […] predominance, and multifocal spike-and-slow waves.[ncbi.nlm.nih.gov] Electroencephalography showed spike-slow waves and slow waves with mixed asynchronized spike waves originating from the frontal lobe during the sleep stage.[ncbi.nlm.nih.gov] At 9 years, video EEG monitoring showed a striking pattern of interictal slow spike-wave and paroxysmal fast activity, maximal over the right, initially unaffected, hemisphere[ncbi.nlm.nih.gov]

  • Generalized Clonic or Tonic-Clonic Seizures

    , poly spike discharges." [2] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave pattern.[en.wikipedia.org] According to "Harrisons Manual of Medicine," the EEG during the tonic phase will show a "progressive increase in low-voltage fast wave activity, followed by generalized high-amplitude[en.wikipedia.org]

  • Juvenile Myoclonic Epilepsy

    The spike-peak and slow-wave onset phases did not show a consistently dominant outflow region.[ncbi.nlm.nih.gov] We applied dipole modeling and brain distributed source analysis to find current sources comprising spikes and slow waves of polyspike and wave complexes (PSWC) in patients[ncbi.nlm.nih.gov] The discharge is frequently short and fragmented, the spike and slow wave complexes show interdischarge frequency variations with multiple spikes and other characteristics[neurologyindia.com]

  • Benign Adult Familial Myoclonic Epilepsy

    […] and slow wave seen in at least 85% of slow-wave sleep.  Characterized by a hallmark EEG presentation, called continuous spike and-wave during sleep (CSWS) or electrical[slideshare.net] The onset may be difficult to discern, and postictal EEG slowing may be noted. Slow spike-and-wave discharges (2.5 Hz).[reference.medscape.com] Slow spike and wave with fast activity in sleep. Eleven-year-om gm with LGS.[euroformhealthcare.biz]

  • Myoclonic-Astatic Epilepsy

    EEG showed long sequences of slow spike-wave activity and half the patients had spike and slow wave foci.[ncbi.nlm.nih.gov] The interictal EEG revealed frequent bursts of generalized 100-200 μV, 2-4 Hz spike-and-slow-wave complexes.[ncbi.nlm.nih.gov] Furthermore, data of spike-wave complexes ranging in frequency 4-7 Hz tend to accompany photosensitivity. Parietal theta and background slowing are also present in EEG.[symptoma.com]

  • West Syndrome

    […] and slow-wave activity ( Gibbs and Gibbs 1952 ).[medlink.com] Interictal EEG displays diffuse and asynchronous high voltage spikes and slow waves suggesting the hypsarrhythmic pattern. B.[bmcneurol.biomedcentral.com] Interictal The background EEG is often highly disorganized with high voltage irregular slow waves intermixed with multifocal spikes and polyspikes, this is termed 'hypsarrhythmia[epilepsydiagnosis.org]

  • Idiopathic Generalized Epilepsy

    Panayiotopoulos et al. (1994) [21] observed that 51.5% of patients had spike/multiple spike-slow wave discharges.[annalsofian.org] […] during tonic phase; bursts of spikes and slow waves during clonic phase 70% are seizure -free under treatment In some cases, no medical therapy is necessary avoid triggers[amboss.com] […] and wave photic driving photoparoxysmal response photomyogenic artifact poly spike and wave posterior dominant rhythm POSTs RMTTD sawtooth waves SIRPIDs sleep spindles slow[eegatlas-online.com]

  • Juvenile Absence Epilepsy

    All patients had minimum twice EEG recordings and all had typical 3-Hz generalized spike and slow-wave discharges at least on one EEG.[ncbi.nlm.nih.gov] EEG shows classical generalized 3 Hz spike-and-slow-wave discharges.[medlink.com] Diagnostic methods Diagnosis relies on the clinical features and on electroencephalogram (EEG) recorded awake and during sleep, that displays a generalized 3-4 Hz spike-and-slow-wave[orpha.net]

  • Early Infantile Epileptic Encephalopathy Type 6

    spike and slow wave pattern of 1.5 to 2 Hz, [and it has] different seizure types.[neurologylive.com] At onset, EEG is usually normal but later spikes or poly spike-waves with a slowing of background activity are noted as well as multifocal discharges.[orpha.net] Four children had generalized spike and slow wave or polyspike and slow wave.[neurology.org]

  • Encephalopathy

    […] and paroxysmal bursts of sharp and slow waves, these drugs increase epileptiform activity in known epileptic patients, clozapine increase bilateral spike waves discharges[slideshare.net] .  Asynchronous slow waves and higher amplitude and low frequencies.  *. Burst of bisynchronous slow waves.  *. Rhythmical un-reactive alpha or theta coma.  *.[slideshare.net] *Repetitive and fairly stereotyped waveforms appearing at regular intervals, sharps/spike waves or complex discharges.[slideshare.net]

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