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17 Possible Causes for Abnormal Spikes, Paroxysmal Activity - Spikes, Paroxysmal Activity - Spikes Occipital Right

  • Epilepsy

    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[] (spikes and slow waves); (d) occurrence at any age in childhood and adulthood; (e) frequently demonstrable aetiology (tumor, vascular); and (f) no progressive evolution of[] If you have epilepsy, the EEG may show abnormal spikes or waves in your brain's electrical activity patterns. Different types of epilepsy cause different patterns.[]

  • Benign Adult Familial Myoclonic Epilepsy

    Alvarez and Lombroso reported hypnagogic paroxysmal spike wave activity (minimal epileptiform features, sharp waves embedded into hyperventilation, or hypnagogic hypersynchrony[] Landau-Kleffner Syndrome and Continuous Spike wave in slow wave sleep: The epileptiform abnormalities seen during sleep EEG in these children is markedly increased compared[] Paroxysmally, rhythmic θ-activity at 4 to 5 Hz appears in the centroparietal areas, as do fast bilateral spike-waves, which may be associated later with variable focal or[]

  • Idiopathic Generalized Epilepsy

    Generalized spike-wave discharges and diffuse paroxysmal fast activity were categorized as interictal and ictal, based on duration of less than 10 seconds or greater, respectively[] The abnormalities included generalized spike-wave and/or spike-polyspike morphology in majority.[] Abstract Magnetic resonance imaging (MRI) techniques have been used to quantitatively assess focal and network abnormalities.[]

  • Myoclonic-Astatic Epilepsy

    - or polyspike-wave activity at more than 2.5 Hz without generalized paroxysmal fast activity or focal spikes.[] The type of abnormal activity is called ‘spike and wave’ or ‘polyspike and wave’. Children with myoclonic-astatic epilepsy are not usually photosensitive.[] EEG abnormality is enhanced by sleep deprivation and by sleep. Generalized spike-and-wave often becomes fragmented with sleep deprivation or in sleep.[]

  • Juvenile Myoclonic Epilepsy

    We compared the occurrence and involvement of posterior electrodes for focal abnormalities and generalised spike-wave activity in the EEG outside photic stimulation between[] […] discharges on electroencephalography, and a lack of focal abnormality on magnetic resonance imaging (MRI).[] Neuroimaging typically reveals no abnormalities and EEG frequently reveals generalized spike-wave activity at a frequency of 4-6 hertz.[]

  • Generalized Clonic or Tonic-Clonic Seizures

    Jerk-locked premyoclonus spikes Hand tremor Neuronal loss in central nervous system Cutaneous photosensitivity Hyperreflexia Heterogeneous Weight loss Dystonia Splenomegaly[] Abnormal asymmetry in benign epilepsy with unilateral and bilateral centrotemporal spikes: a combined fMRI and DTI study.[] EEG abnormalities are more likely or increased with sleep deprivation and during sleep.[]

  • West Syndrome

    Brain MRI revealed no abnormal findings although interictal EEG demonstrated left centro-parieto-temporal localized spike foci.[] The patient was followed up to 13 years of age, and at the last examination was shown to have severe speech delay, seizures, and continuous spike-and-wave activity on EEG.[] Abnormality may only be seen in sleep or on wakening.[]

  • Juvenile Absence Epilepsy

    The discharge is heterogeneous, often asymmetrical and may include irregular spike and slow wave complexes, fast and other paroxysmal activity.[] Although focal spikes can occur, if they consistently arise in 1 area, consider structural brain abnormality. Caution. If slow spike-and-wave ( Imaging.[] Since altered awareness occurs with even brief bursts of spike-wave paroxysms on EEG, treatment should be titrated to suppressing all epileptiform activity.[]

  • Encephalopathy

    […] and paroxysmal bursts of sharp and slow waves, these drugs increase epileptiform activity in known epileptic patients, clozapine increase bilateral spike waves discharges[] Structural abnormalities can often be seen on cranial MRI.[] […] delta bursts, that is called as paradoxical arousal response 18. * Background slowing * Increased theta delta activity * Paroxysmal sharp waves * Theta bursts * Delta bursts[]

  • Uremic Encephalopathy

    […] discharges (PLEDS). [37] In hypokalemia, diffuse slow activity can be seen together with paroxysmal delta/theta activity, as well as focal paroxysms of sharp waves and spike-waves[] Preterminally, the patient becomes immobile and mute. 43 Investigation of dialysis dementia Abnormalities in EEG may precede clinically overt symptoms by up to 6 months.[] ., frontal intermittent rhythmic delta activity (FIRDA), or spikes and sharp waves as well as spike-wave discharges in temporal regions. [37] In hyponatremia, EEG detects[]

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