Motor functional neurological disorders: An update.

Motor functional neurological disorders (FNDs) are motor symptoms not explained by a lesion or related to a known dysfunction of the central nervous system, yet functional imaging studies suggest the presence of a genuine brain dysfunction. With this common disabling condition, there is a particular need for collaboration between neurologists and psychiatrists. Neurologists can search for positive clinical signs to make the diagnosis, which can then be followed by an explanation of the disease, whereas psychiatrists can look for psychological factors and psychiatric comorbidities in order to deliver appropriate treatment. Such a multidisciplinary approach is important, particularly with the participation of neurologists, psychiatrists, physiotherapists and psychologists. If necessary, additional treatments such as transcranial magnetic stimulation (TMS), hypnosis and sedation may be proposed.