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20 Possible Causes for Abnormal Spikes, Temporal Focal Spikes, Unilateral Centro-Temporal Spikes

  • Epilepsy

    In infancy, the EEG background was normal (1), showed diffuse (3) or focal slowing that was temporal (1) and in the left hemisphere (1), and showed focal (central, temporal[brain.oxfordjournals.org] (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[medlink.com] 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.[northshore.org]

  • Juvenile Myoclonic Epilepsy

    spikes immediately preceding bisynchronous discharges, and subsequently to temporal intermittent rhythmic delta activity and temporal lobe-onset seizures.[ncbi.nlm.nih.gov] We compared the occurrence and involvement of posterior electrodes for focal abnormalities and generalised spike-wave activity in the EEG outside photic stimulation between[ncbi.nlm.nih.gov] […] discharges on electroencephalography, and a lack of focal abnormality on magnetic resonance imaging (MRI).[ncbi.nlm.nih.gov]

  • Benign Adult Familial Myoclonic Epilepsy

    EEG during drowsiness and sleep showing frequent bilateral synchronous/independent biphasic spikes followed by slow waves in the centro-temporal regions. 32.  Childhood/adolescent[slideshare.net] 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[epilepsyfoundationmn.org] […] childhood epilepsy with centrotemporal spike -childhood epilepsy with occipital paroxysms Generalized epilepsies & synd.[enotes.tripod.com]

  • West Syndrome

    Brain MRI revealed no abnormal findings although interictal EEG demonstrated left centro-parieto-temporal localized spike foci.[ncbi.nlm.nih.gov] 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.[ncbi.nlm.nih.gov] Abnormality may only be seen in sleep or on wakening.[epilepsydiagnosis.org]

  • 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[mendelian.co] Abnormal asymmetry in benign epilepsy with unilateral and bilateral centrotemporal spikes: a combined fMRI and DTI study.[frontiersin.org] EEG abnormalities are more likely or increased with sleep deprivation and during sleep.[epilepsy.com]

  • Idiopathic Generalized Epilepsy

    The abnormalities included generalized spike-wave and/or spike-polyspike morphology in majority.[annalsofian.org] Abstract Magnetic resonance imaging (MRI) techniques have been used to quantitatively assess focal and network abnormalities.[ncbi.nlm.nih.gov] EEG findings About half of patients had an abnormal EEG viz. spikes, polyspikes and slow waves.[annalsofian.org]

  • Encephalopathy

    *Frontal dominance (FIRDA) --non specific ,diffuse encephalopathy, if focal ?[slideshare.net] Structural abnormalities can often be seen on cranial MRI.[orpha.net] *Repetitive and fairly stereotyped waveforms appearing at regular intervals, sharps/spike waves or complex discharges.[slideshare.net]

  • Juvenile Absence Epilepsy

    Although focal spikes can occur, if they consistently arise in 1 area, consider structural brain abnormality. Caution . If slow spike-and-wave ( Imaging.[medlink.com] The electroencephalogram (EEG) can show focal and generalised abnormalities (sharp waves, spikes or spike and slow waves).[epilepsy.org.uk] However, it should be stressed that asymmetries of the ictal discharge and focal abnormalities of mainly functional spikes are common. 6 8 9 These should not be interpreted[adc.bmj.com]

  • Uremic Encephalopathy

    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.[jnnp.bmj.com] Intermittent bursts of high voltage slowing and spike and wave activity are noted, particularly in the frontal leads. 44 The EEG may show an initial deterioration after treatment[jnnp.bmj.com]

  • Organic Brain Syndrome

    Abstract This study addresses the prevalence of organic brain syndrome (OBS) among long-term toluene-exposed rotagravure workers who are still working. The prevalence of OBS in 22 workers exposed to toluene for a minimum of 12 years and 19 unexposed control subjects, matched for age and employment status,[…][ncbi.nlm.nih.gov]