Joseph Guislain's writings on melancholia from 1835 and 1852

Over the course of the 19th century, the concept of melancholia morphed from a partial insanity defined by disorders of judgment to a disorder characterized primarily by mood disturbances. The francophone Belgian psychiatrist Joseph Guislain, whose work has not been previously translated into English, played an important role in this transition. We translate and comment upon two of his key descriptions of melancholia from 1835 and 1852, emphasizing the following 5 features. First, his concept of melancholia is quite "modern" meeting all DSM-5 criteria for major depression. Second, his clinical descriptions are vivid, often giving voice to his patients. Third, other aspects of his text reflect older concepts, including 17th century melancholic subtypes. Fourth, and of particular historical import, he was, in 1835, likely the first major European alienist to argue that nonpsychotic melancholia was an important form of the disorder and a legitimate mental illness. This represented key step in the transition of melancholia from a psychotic to a mood disorder and also helped expand the 18th century model of insanity which was as restricted solely to disturbances of judgment/imagination. Fifth, beginning with his 1835 writings, but more prominently in his 1852 text, Guislain emphasizes that melancholia is a form of phrenalgia - mental pain. In so doing, he played an important role in helping initiate this influential psychophysiological theory of melancholia that was championed by Wilhelm Griesinger and other important German and English psychiatrists later in the 19th century.