Post-traumatic stress disorder (PTSD) is a mental health condition that can be caused by exposure to a traumatic event. Symptoms of PTSD can include flashbacks, avoidance of reminders of the event, difficulty concentrating or sleeping, depression, panic disorder, and substance abuse. PTSD can be treated with a combination of therapy and medication, such as trauma-focused therapy and cognitive processing therapy, as well as medications. Treatment should be tailored to the individual and address both the traumatic event and the PTSD symptoms.