Create issue ticket

997 Possible Causes for EEG Normal

  • Conversion Disorder

    Conversion disorder is a type of somatoform disorder which may occur as an expression of psychological or emotional conflicts. Conversion disorder involves one or more unexplained physical symptoms. The onset of conversion disorder is usually acute. It may follow a stressful or psychologically traumatic event such[…][symptoma.com]

  • Locked-in Syndrome

    Abstract Twenty-three EEG studies in eight patients with "locked-in" syndrome were reviewed. The EEG was either normal or minimally slow in all except one patient.[ncbi.nlm.nih.gov] This explains the discrepancy between a normal EEG (only minor abnormalities) and presumed unconsciousness.[ncbi.nlm.nih.gov] In patients with locked-in syndrome, EEG shows normal sleep-wake patterns. Prognosis depends on the cause and the subsequent level of support provided.[merckmanuals.com]

  • Benign Familial Infantile Epilepsy

    They had normal psychomotor development during and after the onset of seizures, had normal interictal EEG, normal brain imagining and good response to treatment.[cags.org.ae] Diagnostic procedures All relevant tests are normal. Inter-ictal EEG Normal. Ictal EEG Focal discharges.[epilepsy.com] All of them had a good response to antiepilepsy drugs, and neurologic examination and EEG and neuroradiologic studies were normal.[ncbi.nlm.nih.gov]

  • Vitamin B12 Deficiency

    MRI brain and EEG were normal and there were no changes in medications.[ncbi.nlm.nih.gov] Seizures soon dissolved, EEG and MRI scan normalized and developmental catch-up occurred.[ncbi.nlm.nih.gov] […] of vitamin B12 treatment with normal vitamin plasmatic levels.[ncbi.nlm.nih.gov]

  • Panayiotopoulos Syndrome

    Diagnostic procedures All tests other than EEG are normal.[epilepsy.com] […] extraoccipital spikes or normal EEG.[en.wikipedia.org] Interictal EEG . A single routine EEG is normal in 10% of patients.[medlink.com]

  • Acute Hyperventilation

    This study evaluated the effects of 3 gas mixtures (16% O2, 21% O2, 100% O2) on posterior frequencies of the resting and hyperventilatory EEG in normal subjects aged 23-37[ncbi.nlm.nih.gov]

  • Anemia

    Electroencephalography (EEG) findings may be normal or show nonspecific slowing. Follow-up EEG findings may be improved in response to treatment.[web.archive.org]

  • Familial Infantile Myoclonic Epilepsy

    Diagnostic procedures All relevant tests are normal. Inter-ictal EEG Normal. Ictal EEG Focal discharges.[epilepsy.com] Inter-ictal EEG Normal. Ictal EEG Generalized polyspike or spike and slow-wave discharges.[epilepsy.com] Despite the high frequency of seizures, repeated EEG recordings showed normal background rhythm and rare interictal spikes and waves.[ncbi.nlm.nih.gov]

  • Depression

    The model was tested using EEGs obtained from 15 normal and 15 depressed patients.[ncbi.nlm.nih.gov] It learns automatically and adaptively from the input EEG signals to differentiate EEGs obtained from depressive and normal subjects.[ncbi.nlm.nih.gov] The algorithm attained accuracies of 93.5% and 96.0% using EEG signals from the left and right hemisphere, respectively.[ncbi.nlm.nih.gov]

  • Insomnia

    Successful separation of depressed, normal, and insomniac subjects by EEG sleep data. Arch Gen Psychiatry. 1979;36(1):85-90. 7. Coble P, Foster FG, Kupfer DJ.[primarypsychiatry.com] It is possible that abnormal limb movements during sleep may be associated with an unidentified neurophysiological alteration in micro-structure of the EEG sleep pattern.[web.archive.org] EEG sleep changes as predictors in depression. Am J Psychiatry. 1976;133(6):622-626. 6. Gillin JC, Duncan W, Pettigrew KD, Frank BL, Snyder F.[primarypsychiatry.com]

Further symptoms