Patients with stroke mimics vs stroke or transient ischemic attack had a higher risk for post-traumatic stress disorder.

A survey shows that about 26 percent of survivors of the Tokyo subway sarin gas attack nearly 31 years ago are still suffering from post-traumatic stress disorder, or PTSD.

Researchers on Long Island say they've found physical evidence of post-traumatic stress disorder in World Trade Center first responders. The study could change how the disorder is understood and even ...