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Unusual immobility of posture and decreased sensitivity to pain. Causes include nervous disorders, Parkinson’s disease, epilepsy, and extreme shock, among others.

Example: A patient is observed standing immobile in a busy corridor for over an hour without regard to surroundings or passers by.

APA Reference
Grinnell, R. (2018). Catalepsy. Psych Central. Retrieved on September 24, 2020, from