OCD and Obsessive-Compulsive Personality Disorder (OCPD) share more than just a similar name, and it turns out that when they occur together, the picture changes quite a bit. A 2025 study of 78 people with OCD found that just over a third also had comorbid OCPD — and that group had a noticeably harder road.
Compared to those with OCD alone, people with both conditions showed greater symptom severity, longer treatment duration, reduced insight into their symptoms, and higher rates of depression, aggression, and impulsivity. The researchers also found particular symptom patterns — like contamination obsessions and avoidance-based compulsions — showed up more often in this combined group.
Why does this matter practically? Because OCD and OCPD, despite the name overlap, are genuinely different conditions that need to be assessed separately. OCD involves intrusive, unwanted thoughts and rituals aimed at reducing anxiety; OCPD is a broader personality pattern of rigidity and control that the person often doesn't experience as a problem at all. When both are present, treatment that only targets OCD symptoms may miss half the picture.
If you've been treated for OCD before but the improvement plateaued, or if perfectionism and control run deeper than the obsessions and rituals themselves, it's worth raising OCPD specifically with your psychologist.