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English
Etymology
From hyper- + arousal.
Noun
hyperarousal (usually uncountable, plural hyperarousals)
- A state of heightened psychological and physiological tension resulting in reduced pain tolerance, anxiety, excessive response to sensory stimulation, insomnia, and fatigue.
2010, Liz Royle, Catherine Kerr, Integrating EMDR Into Your Practice, page 35:Hyperarousal after a traumatic experience is normal. It occurs when a person's brain believes that person is at risk again because it misreads an external signal or trigger.