Why Is OCD Still Underdiagnosed? What the IOCDF White Paper Reveals
OCD is among the most prevalent psychiatric disorders worldwide, affecting an estimated 240 million individuals over the course of their lifetime. Despite substantial advances in the development of effective, evidence-based interventions, a considerable proportion of individuals with OCD remain undiagnosed or untreated, resulting in persistent suffering and limited access to appropriate clinical care.
A recent White Paper published by the International OCD Foundation (IOCDF) in December 2025 provides a comprehensive overview of the current state of OCD diagnosis and treatment in the United States. The report is based on the analysis of ten years of electronic health records encompassing more than 10.4 million individuals.
OCD Remains Largely Underdiagnosed
Of all electronic health records included in the analysis, only 0.51% contained a documented diagnosis of OCD. This prevalence is markedly lower than the estimated lifetime prevalence of OCD, which is reported to be as high as 3% in the general population.
The investigators further identified thousands of cases in which clinical documentation contained clear evidence of OCD symptoms, yet no formal diagnosis had been recorded. Collectively, these findings suggest that up to 75% of individuals with OCD remain unrecognized or undiagnosed within the healthcare system.
The Treatment Gap
Even among individuals who receive a formal diagnosis, access to appropriate, evidence-based treatment remains markedly limited.
The study found that:
- Only 2% of individuals with OCD had received Exposure and Response Prevention (ERP), the first-line psychological treatment for OCD.
- Only 19% of individuals with OCD had received any form of Cognitive Behavioral Therapy (CBT).
- More than 72% had not been referred to evidence-based treatment, including ERP, despite the fact that over half had already undergone evaluation by a mental health professional.
These findings indicate that a substantial proportion of mental health professionals continue to underutilize, or fail to refer patients for, evidence-based interventions recommended by international guidelines for OCD.
The Way Forward
The White Paper identifies four key areas for action to improve the diagnosis and treatment of OCD:
- Implementing routine screening to facilitate the early identification and diagnosis of OCD.
- Enhancing the education and clinical training of mental health professionals to ensure competence in the assessment, diagnosis, and evidence-based treatment of OCD, including specialized training in ERP.
- Promoting the implementation of evidence-based clinical practice guidelines that recommend ERP as the first-line treatment.
- Increasing awareness among the public and healthcare professionals to reduce misconceptions, stigma, and delays in the diagnosis of OCD.
In conclusion, the latest IOCDF White Paper underscores a significant gap between the available scientific evidence and its implementation in clinical practice. Although effective, evidence-based treatments for OCD are well established, many individuals continue to experience delays in diagnosis or fail to receive gold-standard, evidence-based treatment for OCD.
Improving the early recognition of OCD, enhancing the training of mental health professionals, and expanding access to evidence-based interventions are essential to ensuring that more individuals with OCD receive the most effective treatments currently available.
Note:
This article is based on the White Paper published by the International OCD Foundation (IOCDF) in December 2025 and provides a concise overview of its principal findings. In selected sections, translated excerpts from the original report have been incorporated to accurately convey its content.
Source::
International OCD Foundation. (2025). America’s OCD care crisis: National findings on the failure of effective OCD treatment to reach patients. International OCD Foundation