Definition
Hypervigilance is a state of constant threat-scanning, where the nervous system stays on high alert watching for danger even when things are safe. A person may seem jumpy, tense, easily startled, or exhausted from never fully relaxing. For autistic people it can grow from years of unpredictable sensory input and social experiences that felt unsafe.
Why It Matters
A brain stuck on alert has little energy left for learning, connecting, or coping. Recognizing hypervigilance helps families see a wired or on-edge child as protecting themselves, not misbehaving. It points toward building predictability and safety rather than adding more pressure.
Common Misconception
It is often read as anxiety by choice, being dramatic, or refusing to relax. But hypervigilance is an automatic survival response the person cannot simply switch off. Telling someone to calm down misses that their body genuinely does not yet feel safe enough to let go.