Which of the following symptoms is commonly associated with Post-Traumatic Stress Disorder?

Flashbacks are a hallmark symptom of Post-Traumatic Stress Disorder (PTSD), where individuals relive or re-experience the traumatic event as if it were happening again. These intrusive memories can be triggered by stress or reminders of the trauma, leading to significant distress. Flashbacks set PTSD apart from other anxiety disorders, as they connote a direct connection to a particular traumatic event. This symptom is not just a common feature; it is essential for the diagnosis of PTSD according to the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition).

The other choices, while they can occur in various psychological conditions, do not specifically identify PTSD. Panic attacks can be associated with several anxiety disorders, obsessive thoughts are key features of Obsessive-Compulsive Disorder (OCD), and memory loss may relate to other conditions but is not a defining symptom of PTSD. Therefore, the presence of flashbacks strongly correlates with the experiences of those who have developed PTSD following a traumatic event.