From Julian Lieb:

Re: Paranoia rife among us, researchers say (March 31): In 1921 Emil Kraepelin published, “Manic Depressive Insanity and Paranoia.” Paranoia is today recognized as a symptom of both depression and mania. The high prevalence of paranoia is an important finding, but to dissociate it from mania and depression is not helpful. And to claim that paranoia responds to cognitive behavior therapy is downright irresponsible. Imagine trying to treat Hitler and Stalin, both paranoid manic depressives, with cognitive therapy. Propaganda and rhetoric, not science.

Julian Lieb, M.D.