In Triggered, Fletcher Wortmann describes his struggles with obsessive-compulsive disorder, also known as the "doubting disorder." Thomas Dunne Books hide caption

itoggle caption Thomas Dunne Books

The U.S. military is trying to improve treatment of post-traumatic stress disorder. But many veterans say they're still under pressure to deny they have problems. Here, military personnel attend a presentation on PTSD at Fort Hamilton Army Garrison in Brooklyn, N.Y., in December 2009. Chris Hondros/Getty Images hide caption

itoggle caption Chris Hondros/Getty Images

Students at Tohoku Chosen, an elementary and junior high school for North Koreans in Sendai City, now take dance classes in the school's cafeteria because their main building was destroyed when the earthquake struck northeast Japan last March. Doualy Xaykaothao/NPR hide caption

itoggle caption Doualy Xaykaothao/NPR