Death from violent laughter has been recorded, but in this instance it is very probable that death was not due to the emotion itself, but to the extreme convulsion and exertion used in the laughter. The Ephemerides mentions a death from laughter, and also describes the death of a pregnant woman from violent mirth. Roy, Swinger, and Camerarius have recorded instances of death from laughter. Strange as it may seem, Saint-Foix says that the Moravian brothers, a sect of Anabaptists having great horror of bloodshed, executed their condemned brethren by tickling them to death.
Powerfully depressing emotions, which are called by Kant "asthenic," such as great and sudden sorrow, grief, or fright, have a pronounced effect on the vital functions, at times even causing death. Throughout literature and history we have examples of this anomaly. In Shakespeare's "Pericles," Thaisa, the daughter to Simonides and wife of Pericles, frightened when pregnant by a threatened shipwreck, dies in premature childbirth.
In Scott's "Guy Mannering," Mrs. Bertram, on suddenly learning of the death of her little boy, is thrown into premature labor, followed by death. Various theories are advanced in explanation of this anomaly. A very plausible one is, that the cardiac palsy is caused by energetic and persistent excitement of the inhibitory cardiac nerves. Strand is accredited with saying that agony of the mind produces rupture of the heart. It is quite common to hear the expression, "Died of a broken heart;" and, strange to say, in some cases postmortem examination has proved the actual truth of the saying. Bartholinus, Fabricius Hildanus, Pliny, Rhodius, Schenck, Marcellus Donatus, Riedlin, and Garengeot speak of death from fright and fear, and the Ephemerides describes a death the direct cause of which was intense shame. Deleau, a celebrated doctor of Paris, while embracing his favorite daughter, who was in the last throes of consumption, was so overcome by intense grief that he fell over her corpse and died, and both were buried together.
The fear of child-birth has been frequently cited as a cause of death McClintock quotes a case from Travers of a young lady, happily married; who entertained a fear of death in child-birth;although she had been safely delivered, she suddenly and without apparent cause died in six hours. Every region of the body was examined with minutest care by an eminent physician, but no signs indicative of the cause of death were found. Mordret cites a similar instance of death from fear of labor. Morgagni mentions a woman who died from the disappointment of bearing a girl baby when she was extremely desirous of a boy.