Source:http://linkedlifedata.com/resource/umls/id/C0007384
MSH: A condition characterized by transient weakness or paralysis of somatic musculature triggered by an emotional stimulus or physical exertion. Cataplexy is frequently associated with NARCOLEPSY. During a cataplectic attack, there is a marked reduction in muscle tone similar to the normal physiologic hypotonia that accompanies rapid eye movement sleep (SLEEP, REM). (From Adams et al., Principles of Neurology, 6th ed, p396),CSP: transient attack of weakness precipitated by emotional excitement; patient falls as if struck down.,NCI: A rare disorder characterized by sudden and transient episodes of loss of muscle tone. It often follows an experience of intense emotions. It is seen in patients with narcolepsy.