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54 Possible Causes for Irregular Spikes and Slow Waves

  • Myoclonic-Astatic Epilepsy

    EEG showed long sequences of generalised irregular spike and slow waves.[ncbi.nlm.nih.gov] Ictal EEG Myoclonic and atonic seizures discharges of irregular spike-waves or polyspike-waves at 2.5 to 3 Hz or more.[epilepsy.com] Myoclonic-atonic seizures manifest with discharges of irregular spike-wave or polyspike-wave complexes at a frequency of 2.5 to 3 Hz, or faster.[medlink.com]

  • Absence Seizure

    Ictal - EEG is of slow (less than 2.5 Hz) spike and slow wave.[en.wikipedia.org] spike-and-slow-wave complexes, fast activity, or other paroxysmal activity; abnormalities bilateral but often irregular and asymmetrical Nonabrupt onset or cessation abrupt[emedicine.medscape.com] The discharge is heterogeneous, often asymmetrical and may include irregular spike and slow wave complexes, fast and other paroxysmal activity.[en.wikipedia.org]

  • Panayiotopoulos Syndrome

    An outpatient EEG 6 months later showed abundant multifocal, predominantly posterior, as well as irregular generalized spike-and-slow-wave discharges on normal background[ncbi.nlm.nih.gov] […] background Irregular generalized spike or polyspike and slow wave complexes Photosensitive, decreased during sleep Prognosis: Slow progression, may live to 60s Lafora Disease[emilytam.com] , random, and monophasic medium-voltage spikes intermixed and superimposed on the slow waves.[demosmedical.com]

  • Benign Familial Infantile Epilepsy Type 4

    In this patient, IPS induced moderate‐voltage irregular spike‐and‐slow wave complexes and paroxysmal bursts of high‐voltage polyspikes more evident over the occipital region[onlinelibrary.wiley.com] […] background Irregular generalized spike or polyspike and slow wave complexes Photosensitive, decreased during sleep Prognosis: Slow progression, may live to 60s Lafora Disease[emilytam.com] Intermittent photic stimulation induced the appearance of moderate‐voltage irregular spike‐and‐slow wave complexes and paroxysmal bursts of high‐voltage polyspikes with maximal[onlinelibrary.wiley.com]

  • Epilepsy

    waves and focal discharges generalized spike waves, PPR irregular generalized spike waves, PPR not specified generalized slow spike waves and runs of fast spikes not specified[ncbi.nlm.nih.gov] NCS, SE, TSs, HSs, FDSs, MAs, atypical ASs MSs, FDSs, GTCSs, atypical ASs, AtSs Fever sensitivity not specified no yes yes no not specified one patient no EEG generalized spike[ncbi.nlm.nih.gov]

  • Benign Adult Familial Myoclonic Epilepsy

    spike-and-slow-wave complexes, fast activity, or other paroxysmal activity; abnormalities bilateral but often irregular and asymmetrical Nonabrupt onset or cessation abrupt[reference.medscape.com] Electrophysiologic Features The EEG activity consists of complex bursts of asynchronous spikes and irregular, arrhythmic sharp waves and slow waves lasting 1 to 5 seconds[neupsykey.com] Automatisms Autonomic components Atypical absence Changes in tone more pronounced than those of typical absence seizure EEG more heterogeneous than in typical absence; may include irregular[reference.medscape.com]

  • Progressive Myoclonic Epilepsy Type 3

    EEG findings include slowing of background activity and bursts of atypical, irregular generalized spike-wave complexes, polyspike-wave complexes or sharp-slow wave complexes[clinicalgate.com]

  • Familial Infantile Myoclonic Epilepsy

    […] background Irregular generalized spike or polyspike and slow wave complexes Photosensitive, decreased during sleep Prognosis: Slow progression, may live to 60s Lafora Disease[emilytam.com] Stimulus-sensitive myoclonus GTC seizures, absence seizures Mental retardation, ataxia, dysarthria MRI – normal or atrophy of pons, medulla, cerebellum EEG findings: Diffusely slow[emilytam.com]

  • Juvenile Absence Epilepsy

    Ictal - EEG is of slow (less than 2.5 Hz) spike and slow wave.[en.wikipedia.org] spike-and-slow-wave complexes, fast activity, or other paroxysmal activity; abnormalities bilateral but often irregular and asymmetrical Nonabrupt onset or cessation abrupt[reference.medscape.com] The discharge is heterogeneous, often asymmetrical and may include irregular spike and slow wave complexes, fast and other paroxysmal activity.[en.wikipedia.org]

  • Generalized Motor Seizure

    Generalized fast rhythmic spikes are seen in the tonic stage. Bursts of spikes and after-coming slow waves are synchronous with clonic jerks.[medlink.com] A postictal period of irregular slow activity follows. Imaging. Neuroimaging is normal. Genetics. It has a complex inheritance.[medlink.com]

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