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18 Possible Causes for Occipital Sharp-and-Slow-Waves, Paroxysmal Activity - Sharp-Waves

  • Epilepsy

    […] background, diffusemultifocal sharp waves and sharp waves-slow waves; paroxysmal fast activity Neurological examination mild diffuse hypotonia, mild ataxia with wide based[ncbi.nlm.nih.gov] […] discharges, diffuse (poly)spikes not available slow background, diffuse slow spike-wave discharges, sharp waves-slow waves; (poly)spike waves; paroxysmal fast activity slow[ncbi.nlm.nih.gov] […] hypsarrhythmia Course of EEG slow background, slow generalized spike-wave discharges and multifocal (poly)spikes slow background, left temporal slowing, slow generalized spike-wave[ncbi.nlm.nih.gov]

  • Rolandic Epilepsy

    The interictal EEG in Panayiotopoulos syndrome commonly reveals functional, mainly multifocal, high-amplitude sharp- and slow-wave complexes, with great variability at various[emedicine.com] Ictal EEGs show sudden occipital discharges.[emedicine.com] About one third of patients never show occipital spikes.[emedicine.com]

  • Creutzfeldt Jakob Disease

    MRI found typical cortical hyperintensities in the occipital regions while rhythm slowing and sharp waves were seen in the occipital regions on EEG.[ncbi.nlm.nih.gov] EEG revealed diffuse and slow activities with periodic sharp-wave complex discharges seen in the right parietal, temporal and occipital lobes.[ncbi.nlm.nih.gov]

  • Fragile X Syndrome

    Fragile-X syndrome (FXS) is a frequent genetic form of intellectual disability (ID). The main recurrent mutagenic mechanism causing FXS is the expansion of a CGG repeat sequence in the 5'-UTR of the FMR1 gene, therefore, routinely tested in ID patients. We report here three FMR1 intragenic pathogenic variants not[…][ncbi.nlm.nih.gov]

  • Angelman Syndrome

    The third pattern, 3–6 Hz activity punctuated by spikes and sharp waves in occipital leads, is associated with eye closure (C).[medicalmarijuana.com] Paroxysms of laughter have no relation to the EEG, ruling out this feature as a gelastic phenomenon (Williams 2005) The diagnosis of Angelman syndrome is based on: A history[medicalmarijuana.com]

  • Lennox-Gastaut Syndrome

    Interictal EEG showed findings characteristic of LGS: generalized slow spike-wave complexes, multifocal sharp waves, generalized polyspikes and paroxysmal fast activity during[ncbi.nlm.nih.gov] In fact, 10/24 cases showed normal sleep transients with presence of symmetric vertex sharp waves in stage 1 non-REM sleep and also symmetric and well structured sleep spindles[omicsonline.org] Also during sleep interictal background activity may be normal.[omicsonline.org]

  • Early Infantile Epileptic Encephalopathy Type 3

    ., multifocal spike- and sharp-wave discharges, repetitive paroxysmal activity, unusually low-voltage fast activity, and findings consistent with complex partial seizures[graphyonline.com]

  • Benign Adult Familial Myoclonic Epilepsy

    Benign occipital epilepsy. Four-year-old girl with seizures. Note the independent, bi-occipital sharp and slow wave complexes with eyes closed.[euroformhealthcare.biz] Alvarez and Lombroso reported hypnagogic paroxysmal spike wave activity (minimal epileptiform features, sharp waves embedded into hyperventilation , or hypnagogic hypersynchrony[euroformhealthcare.biz] […] activity with little sharp-wave or spike activity .[euroformhealthcare.biz]

  • Benign Familial Infantile Epilepsy Type 4

    […] diffuse theta activity and sporadic isolated bilateral sharp waves over the occipital regions (Fig. 4a).[onlinelibrary.wiley.com] The abnormal EEG findings that are most likely to correlate with clinical seizures include spikes or sharp waves, with or without concomitant slow waves, that are generalized[aafp.org] The interictal EEG in Panayiotopoulos syndrome commonly reveals functional, mainly multifocal, high-amplitude sharp- and slow-wave complexes, with great variability at various[emedicine.medscape.com]

  • Lafora Disease

    Intermittent photic stimulation induced generalised discharges of slow and sharp waves with bursts of spike and polyspike wave complexes in occipital regions.[jnnp.bmj.com] The EEG record showed background theta activity as well as slow and sharp waves with a paroxysmal tendency.[jnnp.bmj.com] The first EEG record, carried out the day after admission, showed slightly slow background activity with bursts of slow waves and paroxysms of spikes and waves.[jnnp.bmj.com]

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