Concept

Hyperarousal

One of three sets of criteria used to diagnose PTSD. Symptoms include:

  • Exaggerated startle response
  • Disturbed sleep
  • Difficulty in concentrating or remembering
  • Excessive vigilance

1

2

Updated 2026-07-06

Tags

Clinical Practice of Psychology

Symptoms of Post-traumatic Stress Disorder (PTSD)

Psychology

Social Science

Empirical Science

Science

Life Science / Biology

Biomedical Sciences

Psychology @ OpenStax

Introduction to Psychology @ OpenStax Course

OpenStax Psychology (2nd ed.) Textbook

Behavioral Neuroscience

Neuroscience (Neurobiology)

Natural Science

OpenStax