What is the meaning of PTSD? This page is about the meaning and definition of PTSD.
PTSD stands for Post-traumatic Stress Disorder.
Post-traumatic stress disorder (PTSD) is a disorder characterised by failure to recover after experiencing or witnessing a terrifying event. Someone with PTSD often relives the traumatic event through nightmares and flashbacks, and may experience feelings of isolation, irritability and guilt.