Revisiting neuropsychiatry as a psychiatric discipline

There has been a long-standing debate around the merging of disciplines, owing not to a lack of necessity in multidisciplinary approaches, but the increase in specialisation and fear of each field losing its perceived uniqueness. Fitzgerald¹ made this clear in his remarks regarding how neuropsychiatry can possess that which is both neurology and psychiatry. In a strong refutation, Datta² stated with vigour that while psychiatry could be improved with greater knowledge of behavioural neurology and neurosciences, it is unique in its approach. This rebuttal seems to have touched on a view of the psyche that may be one specific to psychiatry and psychology, but it cannot escape the organ from which these cognitions spontaneously arise.

It is clear that behavioural neuroscience is the foundation of psychiatry, an unassailable statement with which Datta² agreed. Fitzgerald's editorial,¹ however, does not necessarily minimise or underappreciate the importance of psychiatry in managing presentations such as suicidality from psychosocial perspectives, which a neurologist, for example, would not have the training to assess and treat. Instead, this editorial seems to serve an explicit purpose – to identify how specialisation in these specific circumstances may actually harm the field of psychiatry. It can be seen in the present day that psychiatry is stigmatised as much as the disorders it treats – it has been viewed as an intentional deviation from neurology, which is well known to treat organic disorders of the brain. A lack of merger, then, serves to ostracise psychiatry insofar that it becomes less about the brain. To state that discussions about psychotherapy and other psychological interventions are not rooted in neuroscience would be demonstrably fallacious. Even cognitive–behavioural therapy, one of the most studied psychotherapeutic interventions, was developed by a neurologist and recognises that the brain undergoes significant changes due to cognitions, ultimately leading to maladaptive behaviours beyond conscious awareness or personal agency.³ One cannot speak of psychiatric disorders without recognising and appreciating the organ responsible for behaviour and cognition.

The formulation of diagnoses and treatments for psychiatric conditions certainly differs from that of ‘neurological’ conditions such as mild traumatic brain injury, stroke and epilepsy. However, significant evidence suggests that psychiatric research is on the brink of discovering quantitative measures of its disorders, including but not limited to neuroimaging techniques,^{4, 5} neuropsychological evaluations,^6–8 and psychological tests such as those related to implicit associations.^{9, 10} If one is to believe that psychiatry will remain entirely distinct from neurology and that the field need not merge with the professionals who also treat the central nervous system manifestations of brain dysfunction, regardless of aetiology, then psychiatry is destined to lose its footing when technology catches up to the incessantly changing brain that falls prey to inter- and intrapersonal events.