The inferotemporal cortex has cells that code for different object categories and are turned along diagnostic category dimensions, areas distinguishing category boundaries.

Neurofeedback operates at a brain functional level and transcends the need to classify using existing diagnostic categories.

The diagnostic categories and the vast majority of the specific criteria for diagnosis were unchanged.

Since the symptoms tend to overlap with personality disorders, the validity and distinction between these two diagnostic categories has been debated.

The diagnostic categories vary in description, with more familiar categories described less.