Understanding and Treating Severe and Resistant Pathological Aggression: Using Deep Brain Stimulation to Treat Resistant Aggression

Physical aggression can be defined as the use of force with the intention of causing physical injury, psychological damage or death. Pathological aggression may be associated with various psychiatric disorders. This symptom can often be improved by prescribing medication, implementing psychoeducational strategies or even electroconvulsive therapy. However, some patients exhibit such severe pathological aggression that they must be institutionalised because they pose a danger to themselves or others. These patients are then hospitalised in a unit for difficult patients (UMD) for enhanced therapeutic care. Despite this maximum level of care, the pathological aggression of a minority of patients persists, leading to a therapeutic impasse, confining the patient to the UMD for many years with social isolation, a collapsed quality of life, and major repercussions for the family. The aim of this project is to use deep brain stimulation, a controlled, reversible, adaptable and low-morbidity neurosurgical method, in six patients with pathological aggression suffering from either schizophrenia (n=3) or autism spectrum disorders (n=3). We hypothesise that the effects of deep brain stimulation (DBS) of the Sano triangle will significantly control the pathological aggression of these six patients. This is a pilot study with randomised, crossover, double-blind evaluation. It will also provide answers regarding the safety of using SCP for this indication.

NCT Number	NCT07315685
Lead Sponsor	University Hospital, Rouen Collaborators: Centre Hospitalier du Rouvray, Groupe Hospitalier Pitie-Salpetriere
Conditions	Autism Spectrum Disorder, Schizophrenia Disorder
Enrollment	6 participants
Start Date	2026-07-13
Primary Completion	2029-04-08 (estimated)
Study Completion	2029-05-08 (estimated)
Updated on ClinicalTrials.gov	2026-06-08