Both dementia praecox ( in its three classic forms ) and " manic-depressive psychosis " gained wider popularity in the larger institutions in the eastern United States after being included in the official nomenclature of diseases and conditions for record-keeping at Bellevue Hospital in New York City in 1903.
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The first version of the DSM ( DSM-I, 1952 ) contained " depressive reaction " and the DSM-II ( 1968 ) " depressive neurosis ", defined as an excessive reaction to internal conflict or an identifiable event, and also included a depressive type of manic-depressive psychosis within Major affective disorders.
