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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.