What best describes symptoms of post-traumatic stress disorder (PTSD) following a traumatic event?

The symptoms of post-traumatic stress disorder (PTSD) are characterized by the individual re-experiencing the trauma in various forms, which often includes intrusive memories, flashbacks, or distressing nightmares. This re-experiencing can evoke the same fear and hopelessness felt during the original traumatic event. Such symptoms can be debilitating, leading to heightened anxiety and emotional distress, making it difficult for individuals to function in daily life.

Additionally, PTSD can manifest in a range of other symptoms, including avoidance behaviors, negative changes in mood and cognition, and increased arousal or reactivity. However, the core aspect of the condition involves the resurgence of the emotional and psychological impact of the trauma, which aligns directly with the description provided in this answer choice. Understanding this aspect is crucial for effective diagnosis and treatment of PTSD.