What is hypervigilance? Why some people always feel on edge?

Hypervigilance is a condition of heightened awareness in which one is continually looking for potential risks. It is linked to stress, sadness, anxiety, and PTSD, resulting in a constant "on edge" state.

Hypervigilance is a state of heightened awareness, constantly scanning for threats. It’s linked to stress, depression, anxiety, and PTSD, causing a perpetual “on edge” feeling.