Here are two basic ways in which a person may assume the social role of "mental patient." First, it may be assumed voluntarily, meaning that the role is self-defined. Second, it may be foisted upon a person against his will. This means that a person may be defined as "mentally ill" by someone other than himself. This definition, then, if properly implemented, may become generally accepted or socially verified. I shall limit myself here to calling attention to certain ethical and legal aspects of the psychiatrist's involvement with the second class of "mentally ill" patients.
Thomas S. Szasz, Civil Liberties and the Mentally Ill, 9 Clev.-Marshall L. Rev. 399 (1960)