Some people experience post-traumatic stress disorder (PTSD) after exposure to a terrifying event that involved the actual or possible threat of death, violence, or serious injury. Others develop PTSD as the result of having been persistently subjected to a threatening environment, such as a neglectful or abusive home environment in childhood. PTSD can have a massive impact on an individual’s functioning. As a result, dealing with PTSD can be very difficult. Fortunately, there are several cognitive-behavioral therapies that have been proven to be effective in reducing the severity of PTSD symptoms and helping people engage more fully and meaningfully in their lives.