[Neurological complications of non neurological disorders: from protagonism to comorbidity]

The development of scientific advances, constantly opening new frontiers of knowledge, leads to increasing complexity and specialization.

The conflict between the never ending medical specialization and the opposite tendency, which is based mostly on economic grounds, prevents the acquisition of new knowledge across different disorders and diseases. Considering the brain as a complex adaptative system, it follows that in order to understand its pathogenic mechanisms and to design new therapies, the study of the interrelation of all parts concerned must be undertaken. Such approach requires the use of increasingly complex degrees of knowledge, covering different fields and disciplines. A first step might be the study of neurological complications of non neurological disorders. The former should leave its principal status in order to be studied as a consequence of the latter by disconcerted neurologists. The neurological complications of systemic cancer, congenital cardiopathy and autoinmune diseases are good examples of the need for a multidisciplinary approach to achieve a satisfactory capacity of diagnosis and treatment.