Is Brain Stimulation the Best Treatment for OCD? Obsessive-Compulsive Disorder (OCD) is a complex mental health condition characterized by recurring intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions). Understanding the underlying mechanisms of OCD is essential to exploring treatment options. A recent spotlight on this topic was cast by Dr. Ali R. Rezai, a leading figure in the field of stereotactic and functional restorative neurosurgery at the Cleveland Clinic Foundation.