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115 Possible Causes for Generalized and Focal Spike-and-Slow-Waves

  • Juvenile Absence Epilepsy

    There may be generalized spike-and-wave, fragments of generalized spike-and-wave, or polyspike-and-wave. Caution .[medlink.com] Photic stimulation is a recognized cortical precipitant of GSW ( Niedermeyer, 1996 ) and focal occipital spike and slow wave ( Ricci and Vigevano, 1993 ).[academic.oup.com] The clinical correlation of generalized spike-and-wave complexes with clinical seizures is not as clear-cut as in typical absence seizures.[reference.medscape.com]

  • Neonatal Seizures

    Drugs. 2016 Apr;76(6):647-61. doi: 10.1007/s40265-016-0554-7. Author information 1 Pharmacodelivery group, School of Pharmacy, University College Cork, Cork, Ireland. 2 Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland. 3 Irish Centre for Fetal and Neonatal Translational Research, University[…][ncbi.nlm.nih.gov]

  • Stroke

    Interictal The interictal EEG may be normal or may show focal interictal spikes or spike-and-wave over the location of the stroke.[epilepsydiagnosis.org] In the presence of epileptic spasms or generalized seizure types, the background may show widespread slowing or hypsarrhythmia.[epilepsydiagnosis.org] Multi-focal independent spikes or generalized spike-and-wave (usually 3 Hz) can be seen in young patients who evolve to have generalized seizure types.[epilepsydiagnosis.org]

  • Epilepsy

    Neuroimaging studies were unremarkable and electroencephalograms showed high voltage 200-400uV, 2-2.5 Hz generalized spike-and-waves and polyspikes with alternating frontal[ncbi.nlm.nih.gov] Transient outbreaks of spike-slow complex waves (1-2 s) were also noted in all leads.[ncbi.nlm.nih.gov] EEG recordings showed a variety of changes: generalized spike wave and polyspike wave activity, focal discharges, focal or diffuse slowing or were normal.[brain.oxfordjournals.org]

  • Status Epilepticus

    In the control group (n 185), focal/generalized slowing was seen in 43% (n 80) and slowing with some spike/sharp wave activity in 2% (n 4). 4. Discussion 4.1.[intechopen.com] In a wide variety of cases, three typical features have been shared in NCSE, including 1) epileptiform spike or sharp wave discharges, 2) generalized or focal slowing and[cancertherapyadvisor.com] […] percent (n 3) were not classified; forty-six percent (n 30) showed a focal onset and 29% (n 19) a generalized onset; twenty-five percent (n 16) showed a periodic pattern; focal[intechopen.com]

  • Progressive Myoclonic Epilepsy Type 3

    EEG: Generalized almost symmetrical high-voltage polyspikes-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes on a slow &[pubs.sciepub.com] 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] EEG revealed abundant generalized almost symmetrical high-voltage polyspike-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes[pubs.sciepub.com]

  • Generalized Motor Seizure

    Generalized slowing is not seen. Caution. If focal slowing is seen consistently over 1 area, consider structural brain abnormality. Interictal.[medlink.com] Generalized spike-and-wave or polyspike-and-wave is seen in the interictal EEG. Half of the patients have these abnormalities only in sleep. Caution.[medlink.com]

  • Progressive Myoclonic Epilepsy Type 7

    EEG: Generalized almost symmetrical high-voltage polyspikes-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes on a slow &[pubs.sciepub.com] EEG revealed abundant generalized almost symmetrical high-voltage polyspike-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes[pubs.sciepub.com] […] on a slow & disorganized background which aggravated on photic stimulation ( Figure 1 ).[pubs.sciepub.com]

  • Progressive Myoclonic Epilepsy Type 8

    EEG: Generalized almost symmetrical high-voltage polyspikes-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes on a slow &[pubs.sciepub.com] EEG revealed abundant generalized almost symmetrical high-voltage polyspike-and-wave along with frequent bilateral independent posterior dominant (T6, O2//T5, O1) focal spikes[pubs.sciepub.com] […] on a slow & disorganized background which aggravated on photic stimulation ( Figure 1 ).[pubs.sciepub.com]

  • Generalized Epilepsy with Febrile Seizures Plus

    EEG recordings showed a variety of changes: generalized spike wave and polyspike wave activity, focal discharges, focal or diffuse slowing or were normal.[doi.org] ) discharges or generalized spike wave and polyspike wave activity.[doi.org] After infancy, the EEG background was normal (5), showed diffuse slowing (10) or focal slowing that was bilateral fronto-temporal (2) and left temporal (1).[doi.org]

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