[Deep brain stimulation as a treatment for severe multidrug-resistant obsessive compulsive disorder].

Obsessive compulsive disorder (OCD) is a common and disabling psychiatric condition. About 10 % of patients are considered to be severely affected and refractory to the usual treatments, combining antidepressants and psychotherapy. Deep brain stimulation (DBS) is a promising treatment, reserved for specialized university centers. It is based on the implantation of electrodes aimed at modulating dysfunctional cortico-striato-thalamo-cortical circuits. After studying the different targets to be used, it is now proposed to rethink DBS in terms of networks. The improvement of pathophysiological knowledge of OCD and the development of functional neuroimaging techniques should allow the design of individualized treatment protocols.