Greenberg, Gary; Inside the Battle to Define Mental Illness, Dec 27 2010
What the battle over DSM-5 should make clear to all of us—professional and layman alike—is that psychiatric diagnosis will probably always be laden with uncertainty, that the labels doctors give us for our suffering will forever be at least as much the product of negotiations around a conference table as investigations at a lab bench.
Allen Frances, lead editor of the fourth edition of the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (universally known as the DSM-IV), [...] wrote the book on mental illness, confessing that “these concepts are virtually impossible to define precisely with bright lines at the boundaries.”