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Epileptic Seizures with Mirthful Laughter.

Gelastic seizures (GS) are rare, short, unprovoked, and uncontrollable bouts of laughter (1,2). These attacks are often associated with other signs compatible with seizures and ictal and/or interictal abnormalities on electroencephalography (EEG) (1). GS may originate from the temporal, parietal or frontal lobes, but they predominantly originate from the hypothalamus (3). In the present study, we aimed to evaluate the typical features of GS with different foci and to investigate the brain parenchyma regions related to GS, utilizing video-EEG monitoring (VEM) in four patients with GS after obtaining their informed consents.