Dr. Lance Dodes, M.D. points out that the DSM model of diagnosis is based on observable traits of an individual, private or public. However, when one is using the psychoanalytic model, it is necessary to actually get to know a person in order to assess what unconscious dynamics or fantasies are at play. https://www.psychologytoday.com/blog/psychoanalysis-unplugged/201707/psychiatric-diagnostic-labels-what-do-they-mean