New concepts in the diagnosis of psychiatric disorders
Abstract:
The salient points in this paper include the following: (a) a description of categorical (typological) diagnosis, applicable to psychiatric as well as to medical illness; (b) description and discussion of the five steps necessary to validate clinically a categorical (typological) diagnosis; (c) a description of the currently primitive state of laboratory studies of functional disorders (e.g. schizophrenia, affective disorders, and other functional disorders); (d) a definition of various psychiatric illnesses and a description of the criteria necessary to qualify a symptom for describing them; and (e) the means and purposes of assessing diagnostic homogeneity or heterogeneity in psychiatric illnesses.
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