“The categories used in psychiatric diagnosis are based on observation of signs and symptoms, rather than on pathological processes. One can make use of a few signs, such as facial expressions associated with depression or the flight of ideas associated with mania. But what clinicians mainly use for diagnosis are symptoms, the subject experiences reported by patients. Psychiatrists have little knowledge of the processes that lie behind these phenomena. Thus psychiatric diagnoses, with very few exceptions, are syndromes, not diseases.”

“The main reason why clinicians may not diagnose personality disorders is that they think that doing so supports therapeutic pessimism. Recent research has shown this is not true; most patients get better, either with time or with treatment, that the prognosis is actually better than in many patients with severe mood and anxiety disorders.”

“The categories used in psychiatric diagnosis are based on observation of signs and symptoms, rather than on pathological processes. One can make use of a few signs, such as facial expressions associated with depression or the flight of ideas associated with mania. But what clinicians mainly use for diagnosis are symptoms, the subject experiences reported by patients. Psychiatrists have little knowledge of the processes that lie behind these phenomena. Thus psychiatric diagnoses, with very few exceptions, are syndromes, not diseases.”