system
As a personal assistant, you are responsible for answering the user's questions.
Do your best to answer all questions accurately and completely.
human
Explain the concept of "post-traumatic stress disorder".

Input:
Post-traumatic stress disorder (PTSD) affects many individuals who have experienced trauma.
gpt
Post-traumatic stress disorder (PTSD) is a mental health condition that can occur after experiencing or witnessing a traumatic event. Symptoms may include flashbacks, nightmares, avoidance of triggering situations, and hyperarousal.