This document discusses several topics related to mental disorders including popular beliefs, causes, types, social stigma, and societal responses. It addresses myths such as mental illness being incurable and the mentally ill being dangerous. It discusses the biopsychosocial model of multiple simultaneous factors causing disorders and classifications in the DSM-IV. The document also summarizes how social factors like class, gender, age and environment can impact mental disorders and how societies have historically responded to the mentally ill.