case_images: PMC8741391_01
case_images: EEG showing predominant centrotemporal spikes and waves on the right side (voltage 70 mV/cm).
case_images: CRINM2021-2362679.001.jpg
case_images: PMC8741391_01_CRINM2021-2362679.001.jpg
case_images: fig1
case_images: His electroencephalogram (EEG) showed high voltage, diphasic spikes with slow activity predominantly on the right central-temporal region, creating a horizontal dipole with maximal electronegativity in the right centrotemporal region (Figure 1).
case_images: Abnormal EEG showing electrical status following increased carbamazepine dose (voltage 70 mV/cm).
case_images: CRINM2021-2362679.002.jpg
case_images: PMC8741391_01_CRINM2021-2362679.002.jpg
case_images: fig2
case_images: The repeat sleep EEG showed almost continuous spikes and wave activity suggestive of electrical status in slow-wave sleep, and the diagnosis of nonconvulsive status was established (Figure 2).
case_images: Abnormal EEG showing features of encephalopathy following sodium valproate (voltage 70 mV/cm).
case_images: CRINM2021-2362679.003.jpg
case_images: PMC8741391_01_CRINM2021-2362679.003.jpg
case_images: fig3
case_images: A repeat EEG was carried out during the drowsiness period and showed generalised high amplitude delta activity without frank evidence of epilepsy was in favour of evolving encephalopathy (Figure 3).