Many of us will undergo some kind of trauma during our lifetime. Sometimes, we escape with no long-term effects. However, for millions of people trauma lingers. These people may experience intrusive thoughts of anger, shame and guilt, negative reminders through flashbacks and nightmares, and reactive symptoms such as dissociation and insomnia. In this video, Joelle Rabow Maletis details the science behind post-traumatic stress disorder to help viewers understand why it is often called “the hidden wound.”