The sudden loss in muscle tone that result in the whole body collapsing. It is temporary and can be brought about by extreme emotional stimulus. See narcolepsy- narcolepsy syndrome.

CATAPLEXY: "Joe had a an attack of cataplexy and collapsed to the ground when told his wife was dead."
Cite this page: N., Pam M.S., "CATAPLEXY," in, April 7, 2013, (accessed May 13, 2021).