A gelastic seizure, also known as “gelastic epilepsy”, is a rare type of seizure that involves a sudden burst of energy, usually in the form of laughing or crying. Information regarding gelastic epilepsy, a rare form of epilepsy that involves laughter or crying and is more common in boys than girls. What is Gelastic Epilepsy? Gelastic epilepsy refers to a type of epilepsy in which the seizures are ‘gelastic’, gelastikos being the Greek word for laughter.

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In this trial It has been associated with several conditions, such as temporal and frontal lobe lesionstumorsatrophytuberous sclerosishemangiomasand post-infectious foci, but mainly hypothalamic hamartomas. Symptoms of Gelastic Epilepsy A person may experience seizures at any age, although usually prior to years of age. Global and local fMRI signals driven by neurons defined optogenetically by type and wiring.

If the seizures are caused by a tumor, surgical removal can be attempted. Optic nerve hypoplasia is the only reported condition with gelastic seizures without hypothalamic hamartomas, suggesting that hypothalamic disorganization alone can cause gelastic seizures. Despite the use of higher dose and several combinations of antiepileptic drugs AEDsseizure freedom or good seizure control is rarely achieved in this group of patients Harvey and Freeman Furthermore, previous studies have analysed the gross anatomical locations of hypothalamic hamartomas and have made the observation that parahypothalamic lesions were predominantly associated with precocious puberty whereas intrahypothalamic lesions were mainly associated with gelastic epilepsy and cognitive, behavioural and psychiatric disease Arita et al.


Retrospective analysis of surgical treatment outcomes for gelastic seizures: As noted, we did not include patients with the genetic syndrome of Pallister—Hall in our cohort.

Sessile HHs have a broad attachment to the floor of the third ventricle and the mamillary bodies. Gelastic seizures misdiagnosed as gastroesophageal reflux disease. In pre-verbal infants, a diagnosis may be impossible.

Gelastic Epilepsy

HHs are diagnosed more frequently during childhood and eventually the majority of the patients develop intractable epilepsy. GS is the first type of seizure that these patients develop, although other type of seizures are frequently present such as complex partial seizures, generalized tonic-clonic seizures, drop attacks and infantile spasms.

Often the parahypothalamic lesions were larger, had contact with the pituitary stalk and were more commonly associated with precocious puberty without other neurological manifestations Arita et al. Our findings suggest that in all cases, lesions were centred at the level of the mammillary bodies in the posterior hypothalamus.

Most patients had video-EEG monitoring at the referring centres. Overall, the age of seizure onset in patients with hypothalamic hamartomas was Generalized epilepsy in hypothalamic hamartoma: Patients with clinically symptomatic hypothalamic hamartomas but without seizures are often referred to endocrinology services for the evaluation of precocious puberty and are seldom evaluated in neurology or epilepsy clinics.

Gelastic seizure – Wikipedia

Also when GS appear during the neonatal period, the association with infantile spasms has been described Gomibuchi et al The episodes can also be confused with behavioral and emotional disorders. In fact, some authors have shown that cortical resections are usually not successful in order to control the seizures Cascino et al Gamma knife surgery for epilepsy related to hypothalamic hamartomas.


This finding is also consistent with the available evidence from recent semiological studies in patients with gelastic epilepsy Oehl et al.

A gelastic seizure is defined as sudden occurrence of emotions in the form of a laugh or a cry. Rev Neurol Paris ; At the time of evaluation, he was having 6—8 seizures per day, with multiple seizure types, including gelastic, complex partial and generalized tonic—clonic seizures.

When Trousseau asked the patient why he laughed, the patient was surprised with the question because he was not aware during the spell. Any third party offering or advertising on disabled-world. Compt Rend Soc Biol ; 5: Also in children it is possible to see ictal and interictal generalized polyspike waveform discharges Freeman et al a.

Assessment of cognitive functions before and after stereotactic interstitial radiosurgery of hypothalamic hamartomas in patients with gelastic seizures.

The term status gelasticus was coined by Palmini and colleagues Depth electrodes inserted into the HH have shown immediate intraoperative disappearance of epileptic discharges from the HH, during endoscopic disconnection Choi et al These HHs do not disturb the hypothalamic region and predominantly produce precocious puberty.