Obsessive-Compulsive Disorder: Insight, Trauma, and Links to Schizophrenia Spectrum Disorders

This study aims to better understand Obsessive-Compulsive Disorder (OCD) by examining the types and patterns of OCD symptom presentation. The investigators seek to determine how these symptoms impact overall daily functioning. The study will also explore factors contributing to loss of insight in individuals with OCD, focusing on the potential roles of trauma, personality traits, and disorder severity. This may assist in identifying subgroups of patients who respond more favorably to treatment. Additionally, the study will investigate how individuals with OCD and schizophrenia spectrum symptoms respond to combined sensory stimuli (e.g., auditory and tactile). The goal is to determine whether these responses are associated with specific brain processing patterns, trauma history, or characteristics of compulsive behavior. Insights from this research may help clarify why certain individuals develop repetitive behaviors such as checking and rituals. Participants will be adults aged 18 to 65 diagnosed with OCD or schizophrenia spectrum disorders. Recruitment will occur through psychiatric clinics in Parma. Participation requires signed informed consent.

NCT Number	NCT07092826
Lead Sponsor	Matteo Tonna Collaborators: San Raffaele University Hospital, Italy
Conditions	Obsessive-Compulsive Disorder (OCD), Schizophrenia and Schizophrenia Spectrum Psychosis
Enrollment	300 participants
Start Date	2023-02-01
Primary Completion	2026-02-01 (estimated)
Study Completion	2026-02-01 (estimated)
Updated on ClinicalTrials.gov	2025-08-11