IPA: /ˌhaɪpəˈrɔːzl/
KK: /haɪpərəˈrɔːzl/
A state of increased psychological and physiological tension, often associated with anxiety or stress, where a person may feel overly alert or reactive to stimuli.
After the traumatic event, she experienced hyperarousal, making it difficult for her to relax or sleep.
Hyperarousal is formed from "hyper-" (meaning over or excessive) and "arousal" (from Latin "arousal" meaning to awaken or stimulate). The term describes a state of excessive alertness or heightened physiological response, often associated with stress or anxiety.
Think of 'hyper-' meaning 'excessive' and 'arousal' meaning 'to awaken' — together, they describe a state of being excessively awake or alert.
No commonly confused words.