Schizophrenia
Schizophrenia and its treatment have a long history. Problems with phren which are problems of mental health are in Ancient Greek and in the Middle Ages in England. The first to use the modern term was Eugen Bleuler, a Swiss doctor, who invented it in 1908. Another doctor who used the term was  Emil Kraepelin. Before 1908, the term dementia precox was used for a number of diseases resembling Schizophrenia. Kraepelin used it for diseases that were characterized by a destruction of the personality, with damage to the mood and the will. Kraepelin distinguished them from what he called "manisch-depressives Irresein" ("manic-depressive madness", called manic-depressive disorder or Bipolar disorder today).  At a conference in 1908, Bleuler said that the illnesses described as "dementia preaecox" had nothing to do with dementia, and the term praecox (early-onset) didn't apply in all cases; he proposed the term "Schizophrenia" instead.