Death from laughter is an extremely rare form of death, usually resulting from either cardiac arrest or asphyxiation, that has itself been caused by a fit of laughter. Though uncommon, death by laughter has been recorded from the times of ancient Greece to modern times.
Usually, the phrase "dying from laughter" is used as a hyperbole.
Laughter is normally harmless. Typically, laughter is controlled by two systems in the brain: an involuntary system that involves the amygdala and a voluntary system that involves the premotor opercular areas. [2] However, death may result from several pathologies that deviate from benign laughter. Infarction of the pons and the medulla oblongata in the brain may cause the pseudobulbar affect. [3] Asphyxiation caused by laughter leads the body to shut down from the lack of oxygen.
Laughter can cause atonia and collapse ("agelastic syncope"), [4] [5] [6] [7] which in turn can cause trauma. See also laughter-induced syncope, cataplexy, and Bezold–Jarisch reflex. Gelastic seizures can be due to focal lesions to the hypothalamus. [8] Depending upon the size of the lesion, the emotional lability may be a sign of an acute condition, and not itself the cause of the fatality. Gelastic syncope has also been associated with the cerebellum. [9]
More recently, a 24-year-old carpenter in the Philippines was told a joke by a friend. The carpenter thought the joke was so funny, he laughed until he cried, collapsed, and then died.