medical Definition of hyperarousal
- Although insomnia is considered a sleep disorder, its pathophysiology suggests hyperarousal during sleep and wakefulness.
- —Daniel J. Buysse, The Journal of the American Medical Association, 20 Feb. 2013
- Symptoms of hyperarousal refer to physiological manifestations, such as insomnia, irritability, impaired concentration, hypervigilance, and increased startle reactions.
- —Rachel Yehuda, The New England Journal of Medicine, 10 Jan. 2002