Archaic term for schizophrenia.Emil Kraepelin proposed links between dementia praecox and hormones in 1892....
Schizophrenia, which used to be called early dementia or dementia praecox, is a devastating mental illness.
Among the illnesses he described were manic-depression and dementia praecox, a disorder renamed schizophrenia (split mind) by the Swiss psychiatrist Eugene Bleuler in 1911.