The goal of this clinical trial is to learn if symptom provocation before transcranial Direct Current Stimulation (tDCS) in Obsessive-Compulsive Disorder (OCD) patients. The main question it aims to answer is:
Can symptom-provocation before tDCS improve therapeutic response in OCD patients ?
Researchers will compare the clinical outcomes of OCD patients having received, in one arm, tDCS and, in the other arm, patients having received tDCS preceded by symptom provocation to see if therapeutic response and various other clinical variables differ.