Ictal EEG in patients with convulsions with mild gastroenteritis.

The aim of this study is to reveal detailed clinical manifestations and an evolution of ictal EEG discharges of convulsions with mild gastroenteritis (CwG). We recorded ictal EEGs of six patients with CwG. Clinical manifestations included loss of responsiveness, motion arrest, cyanosis, lateral eye deviation, and hemifacial convulsion. Automatism was not observed in any patients. A generalized tonic-clonic convulsion was observed in five of six patients. Ictal EEGs demonstrated that all seizures were of focal onset that evolved into a secondarily generalized seizure. The region of the onset of ictal discharge was the occipital area in three patients, parietal in one, central in one, and frontal in one, respectively. The seizure of patients with CwG is likely to be a partial seizure with secondary generalization.