Laughter is usually lasts briefly, about 30s. Laughing can also be a component of several other kinds of seizures such as partial seizures with motor symptoms, myoclonic seizures, axial tonic seizures, flexor spasms, generalized convulsive seizures, and petit mal absences.

peter

2010-07-10T03:27:12Z

A type of seizure characterized by laughing or an outburst of laughing as a major feature.

human_phenotype

HP:0010821

http://purl.obolibrary.org/obo/hp.owl

Bursts of laughter or giggling, usually without appropriate related emotion of happiness, and described as mirthless. This seizure type is characteristic of seizures arising in the hypothalamus (see hypothalamic hamartoma), but can occur in seizures arising in the frontal or temporal lobes.

focal emotional seizure with laughing (gelastic)

http://www.case.edu/EpSO.owl#GelasticSeizure

https://www.epilepsy.com/learn/types-seizures/gelastic-and-dacrystic-seizures