A rare concurrence: gelastic seizures in a patient with right temporal nongalenic pial arteriovenous fistula.

Gelastic seizures are the type of seizures that are most commonly seen in childhood and should be excluded definitely in the differential diagnosis of hypothalamic hamartomas. This seizure type may be accompanied by refractory seizures, cognitive decline, and early puberty. However, etiology may also include other causes different than hypothalamic hamartomas. The seizure may also arise from temporal and frontal region, in addition to hypothalamus. Different clinical findings may be observed based on origin and areas of spread.In this article, we report a case of gelastic seizure that has been observed by a different cause other than hypothalamic hamartoma which was reported for the first time in the literature.