an abnormal emotional response to physical or mental trauma in which the individual is rendered unable to adjust to his or her normal roles. Individuals who become psychologically destabilized can manifest subjective cognitive impairments that mimic brain injury.

the action of destabilizing; making something less stable (especially of a government or country or economy)

the act of making a government unsteady

an event that causes a loss of equilibrium (as of a ship or aircraft)