Question:
Many of the symptoms and signs that you describe apply to other personality disorders as well (for instance, the histrionic, the antisocial and the borderline personality disorders). Are we to think that all personality disorders are interrelated?
Answer:
The classification of Axis II personality disorders – deeply ingrained, maladaptive, lifelong behavior patterns – in the Diagnostic and Statistical Manual, fourth edition, text revision [American Psychiatric Association. DSM-IV-TR, Washington, 2000] – or the DSM-IV-TR for short – has come under sustained and serious criticism from its inception in 1952.
The DSM IV-TR adopts a categorical approach, postulating that personality disorders are “qualitatively distinct clinical syndromes” (p. 689). This is widely doubted. Even the distinction made between “normal” and “disordered” personalities is increasingly being rejected. The “diagnostic thresholds” between normal and abnormal are either absent or weakly supported.
The polythetic form of the DSM’s Diagnostic Criteria – only a subset of the criteria is...