A state of increased psychological and physiological tension marked by such effects as anxiety, exaggeration of the startle response, insomnia, reduced pain tolerance, fatigue, and exacerbation of inherent personality traits.
Excessive responsiveness to sensory stimulation. It is found in alcohol withdrawal, post-traumatic stress disorder, and other conditions.
A state or situation characterized by both physical and emotional strain induced by hormones released during the fight-or-flight response triggered by a stimulus.