variants:
or hyper-vigilance
Definition of hypervigilance
: extreme or excessive vigilance : the state of being highly or abnormally alert to potential danger or threat
A person suffering from PTSD may have sleep disturbances, irritability, hypervigilance, heightened startle responses and flashbacks of the original trauma.— Ellen L. Bassuk et al. One common trait among fearful fliers is hypervigilance; they often spend the entire trip watching the flight attendants, analyzing the chime system, and assessing the sounds of the engines.— Nancy J. Perry
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Merriam-Webster unabridged
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Time Traveler for hypervigilance
The first known use of hypervigilance was in 1887
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