Reconceptualizing mental disorders: From symptoms to organs.

Most mental pathologies are diagnosed on the sole basis of the symptoms reported by patients, such as "I'm feeling low." The thrust of this paper is the proposal to reconceptualize mental disorders as dysfunctions of brain subsystems. This shift from symptom to organ would bring psychiatry in line with the rest of medicine, and is analogous to the change in status of venereal infections from skin pathologies, such as chancres, to bacterial infections. The proposal in question is part of the reconceptualization of mental processes as brain processes, in line with the materialist conception of the mind as neural. A practical advantage of this conceptual change is that it suggests approaching mental disorders as brain dysfunctions treatable by biological and chemical means, in addition to social measures, such as accommodating mental patients in ordinary hospitals rather than in isolated "madhouses" at the mercy of amateurs or even charlatans. An additional advantage of the "embodiment" of mental diseases is that it suggests reframing some new research projects, such as explaining why the common cold causes mental fogginess, why hypertension can cause irritability, and why nicotine dependence can be even stronger than cocaine addiction. In other words, the present proposal is to complete the so-called "mapping of the mind onto the brain" by including the abnormal mental processes, which used to be treated by shamans at a time when the mind was conceived of as an immaterial entity detachable from the body.