After a laborious compilation of data, I was able to draw the chart of some psychoses and neuroses’ diagnoses from 1922 to 1965 in the United States.
/!\ Disclaimer /!\ : the data has been compiled with care and rigorously checked once. Therefore, they may contain errors, but probably no significant errors.
https://docs.google.com/spreadsheets/d/1M3FL2aCwpigOO2Uywo3zIkO4aGUn8d9DEwpXfYlQzXg/pubhtml ? gid=2017779160&single=true
On this chart you can follow the trend of the year. From 1922 to 1932, manic-depressive psychosis was almost as popular as schizophrenia. Then this is the slow descent into the underworld : in 1965, almost nobody became bipolar. Paranoia has never been popular, probably melted in the “paranoid schizophrenia”. Neuroses made a pretty breakthrough from the war end, with the purely social diagnoses (not on the chart) as “psychopaths”, “Personality pattern disturbance”, “personality trait disturbance”, “antisocial reaction”, “dysocial reaction” and “sexual deviation”, that also form a wide group in the fifties. Melancholia & “involutional” psychoses (not on the chart) grown with neuroses, then stagnates and decreases from 1957.
But the queen of non-organic psychoses are truly schizophrenia. Even if the psychiatrists do him some infidelities from 1953, and even if the curve of new admissions became inexplicably erratic.
What is remarkable in this chart is, if there is a continuity from one year to the next, mental diseases appear and disappear almost completely in a few decades. The diagnoses for new admissions seem completely arbitrary, and follow fashion in the air.