The treatment of mental ill patients was primarily characterized by throughout the course of history by the terms isolation and exclusion. People with "mental disorders" were not only excluded from society, but also were often kept in so-called asylums.The diploma thesis at hand deals with the development of psychiatry and the treatment and/or care of the mentally ill, but also with the definitions of illnesses used by psychiatrists of the 19th century. The socio-historical and anthropological conditions under which the people with mental disorders lived and which they received treatment for and were treated, presented in this paper. Particularly noteworthy is Michel Foucault, who dealt with the historical development of psychiatry but also considered with the social positions of individuals with mental disorders. Since psychiatry is a relatively young medical science, it is unsurprisingly that psychiatrists in the 19th century were not able to resort to any major literature. There were, however, some psychiatrists, such as Heinroth, who wrote an extensive work on the definitions of various mental illnesses. In the first part of this thesis, one discovers that dealing with psychiatric patients is influenced not only by medical, but also by political, juristic and social aspects. In addition, a thorough investigation of three annual reports from 1868, 1886 and 1911 offered information on the people who were treated in the Styrian State Asylum. Furthermore, the treatment, of sex, the diseases patients suffered and the causes of dead will be discussed using the annual reports of the Landes-Irrenanstalt Steiermark. In the first part of this thesis it becomes clear that dealing with psychiatric patients is characterized not only by medical, but also by political, legal and social aspects. The following questions will be discussed and answered in the analysis section of the paper: Who received treatment, which gender distribution occured, which diseases did people suffer from and what were the causes of death, if they died in the asylum.