Post-Traumatic Stress Disorder (PTSD) is a complex mental health condition triggered by experiencing or witnessing a traumatic event, characterized by distressing memories, flashbacks, nightmares, and severe anxiety that disrupt daily functioning. The causes of PTSD are multifaceted, involving genetic, biological, environmental, and psychological factors. Symptoms often include heightened arousal, avoidance of trauma-related stimuli, negative changes in mood and cognition, and intrusive thoughts. Though PTSD can be debilitating, effective treatment allows many individuals to find relief and improve their symptoms.