According to the National Institute of Mental Health (NIH), Post-traumatic stress disorder (PTSD) is a disorder that develops in some people who have experienced a shocking, scary, or dangerous event.
Some symptoms of PTSD include:
Flashbacks—reliving the trauma over and over, including physical symptoms like a racing heart or sweating
Bad dreams
Frightening thoughts
Staying away from places, events, or objects that are reminders of the traumatic experience
Avoiding thoughts or feelings related to the traumatic event
Trouble remembering key features of the traumatic event