Some psychiatrists are trying to get excessive bitterness identified as a mental illness named post-traumatic embitterment disorder. Of course this has some people who live perfect little lives, and always get what they want, questioning the new classification. The so called "disorder" is modeled after post-traumatic stress disorder because it too is a response to a trauma that endures. "They feel the world has treated them unfairly. It's one step more complex than anger. They're angry plus helpless," says Dr. Michael Linden, the psychiatrist who put a name to how the world works.