<P> The term `` manic - depressive reaction '' appeared in the first American Psychiatric Association Diagnostic Manual in 1952 , influenced by the legacy of Adolf Meyer who had introduced the paradigm illness as a reaction of biogenetic factors to psychological and social influences . Subclassification of bipolar disorder was first proposed by German psychiatrist Karl Leonhard in 1957 ; he was also the first to introduce the terms bipolar ( for those with mania ) and unipolar ( for those with depressive episodes only ) . </P>
<P> The term `` manic - depressive reaction '' appeared in the first American Psychiatric Association Diagnostic Manual in 1952 , influenced by the legacy of Adolf Meyer who had introduced the paradigm illness as a reaction of biogenetic factors to psychological and social influences . Subclassification of bipolar disorder was first proposed by German psychiatrist Karl Leonhard in 1957 ; he was also the first to introduce the terms bipolar ( for those with mania ) and unipolar ( for those with depressive episodes only ) . </P>
when was bipolar disorder first recognized as a psychological disorder
when was bipolar disorder first recognized as a psychological disorder
German psychiatrist Karl Leonhard
German psychiatrist Karl Leonhard