Fig. 4.

A, Epstein-Barr virus encephalitis: 17-year-old woman. Fever. Generalized tonic-clonic seizure followed by severe impairment of awareness requiring hospitalization in ICU. Numerous periodic diffuse complexes occurring every 3–4 seconds. B, Acute Disseminated Encephalomyelitis: 6-year-old boy. Status epilepticus five days after pneumonia. EEG, eight days after the status. Diagnosis of mycoplasma pneumonia on PCR. MRI showed hyperintensities of the caudate and lentiform nuclei bilaterally, especially on the left hemisphere with normalization one month later. Eyes closed. On the left occipital region, the background is abnormal with irregular delta waves. These waves did not react on eyes opening. Frontal complexes evocative of encephalitis can be seen (*) with higher amplitude on the right side.