Posttraumatic stress syndrome (PTSS) is a mental health condition that can develop after a person experiences or witnesses a traumatic event. There are several synonyms for PTSS that may be used interchangeably, including posttraumatic stress disorder (PTSD), posttraumatic stress reaction, and combat stress reaction. PTSS symptoms can include flashbacks, avoidance behavior, feelings of guilt or shame, and hyperarousal. It is important for individuals with PTSS to seek professional help to manage symptoms and work towards recovery. Treatment options may include therapy, medication, and support groups. By seeking help, individuals with PTSS can learn to cope with their symptoms and lead fulfilling lives.