Post-traumatic stress disorder (PTSD) can develop after exposure to a potentially traumatic event that is beyond a typical stressor, such as violent assaults, natural or human-caused disasters, accidents, combat and other forms of violence. About one-half of all adults in the United States will experience at least one traumatic event in their lives, but most … click link to read more …

http://speakersnetwork.com/forms/PTSD.pdf