A 47-day-old male infant had daily tonic seizures and diarrhea since 7 days of age. The seizures occurred several times a day and were characterized by tonic spasms of limbs and an abnormal gaze. Interictal electroencephalography (EEG) showed a burst-suppression pattern. Brain magnetic resonance imaging revealed hypoplasia of corpus callosum. Early infantile epileptic encephalopathy was diagnosed based on the clinical and EEG features. The author here reports on this patient focusing on the diagnosis and dismal prognosis.