OCD in Therapy: What to Say and How to Work With It
By Kristen McClure, MSW, LCSW | TherapistWorksheet.com
OCD is one of the most misdiagnosed, most misunderstood, and — when treated correctly — most treatable conditions in outpatient therapy. It’s also one where well-meaning therapists accidentally make things significantly worse.
If you’ve ever reassured a client with OCD, explored their obsessional content in depth, or helped them “reality-test” their intrusive thoughts — this post is worth reading.
What Makes OCD Different From Other Anxiety
OCD is often grouped with anxiety disorders in clinical training, which creates a treatment problem. With generalized anxiety or social anxiety, you work with the content of the thoughts — examining the evidence, challenging distortions, building tolerance. With OCD, doing this makes things worse.
Here’s why: The problem in OCD isn’t the intrusive thought. Almost everyone has intrusive thoughts. In OCD, the brain tags them as threatening, generates intense anxiety, and demands a response. The response — the compulsion — provides temporary relief. And that temporary relief is the mechanism that reinforces the obsession.
Exploring the content of the thought is itself a form of mental compulsion. Engaging with it — analyzing it, reality-testing it, reassuring oneself about it — keeps the loop going.
The Reassurance Trap
The hardest thing to do with an OCD client is not provide reassurance. They’ll ask for it compellingly:
- “But do you REALLY think it’s okay?”
- “Do you think I’d actually do it?”
- “Is it normal to have thoughts like this?”
Every time you answer these questions directly, you become a tool in the OCD cycle. The reassurance provides a few minutes of relief. Then the doubt comes back.
What to say instead:
“I notice you’re asking me to tell you it’s okay — and I’m not going to do that. Not because it isn’t okay, but because the reassurance is part of the OCD pattern. Every time you get it, it feeds the loop. What I’m going to do instead is sit here with you in the uncertainty. That’s actually the work.”
The “Do You Think I’d Actually Do It?” Question
This usually comes from harm OCD: intrusive thoughts about harming oneself or others. The client is horrified by the thought and desperate for confirmation that they’re not dangerous.
Hold this clearly: people with OCD who have harm-related thoughts are not dangerous. The distress and the horror are actually evidence against the obsession. But you can’t give them that as reassurance, because the loop will just restart.
“The question of whether it’s true is actually the OCD trap — because OCD thrives on the search for certainty. The more you try to prove it isn’t true, the more your brain sends the thought back to be checked again.”
“The work is learning to sit with the uncertainty without doing anything with it.”
What Actually Works: Introducing ERP
Exposure and Response Prevention is the gold-standard treatment for OCD. The basic principle: expose the client to the stimulus that triggers the obsession, then prevent the response. Sit with the anxiety until it naturally decreases. The nervous system learns the trigger isn’t dangerous.
How to explain it to clients:
“The treatment for OCD is called Exposure and Response Prevention. It sounds counterintuitive — we’d intentionally trigger the anxiety and then deliberately not do the compulsion. We’d start at the least scary thing on a list we build together, and we’d stay with the discomfort until it naturally comes down. Your brain would learn, through direct experience, that the anxiety passes on its own, without you having to do anything.”
When to Refer
OCD with moderate-to-severe impairment is best treated by an ERP-specialized therapist. General CBT is not the same as ERP for OCD — the specific protocol matters. The IOCDF (International OCD Foundation) maintains a therapist directory of ERP-trained providers at iocdf.org.
The Full Clinical Toolkit
The When a Client Has OCD Toolkit gives you the complete clinical resource:
- Psychoeducation scripts — explaining OCD vs. anxiety, the obsession-compulsion cycle, why reassurance backfires
- Scripts for the reassurance trap — what to say instead of reassuring
- How to respond to “do you think I’d really do it?” — with clinical rationale
- Introducing ERP to skeptical or fearful clients
- Working with Pure O (primarily mental compulsions)
- When and how to refer to an OCD specialist
Get the When a Client Has OCD Toolkit — $9.99 on Payhip →
Frequently Asked Questions
Is OCD really that different from regular anxiety?
Clinically, yes — and the treatment difference is significant. Standard CBT for anxiety can actually increase OCD symptoms by engaging with the obsessional content. OCD requires ERP, not standard CBT.
What about medication for OCD?
SSRIs have moderate evidence for OCD, and the combination of ERP + SSRI is often more effective than either alone. The effective doses for OCD are often higher than for depression.
My client has intrusive thoughts but no visible compulsions — is it still OCD?
“Pure O” is a misnomer — there are almost always compulsions, but they’re internal: mental review, rumination, suppression. These maintain the cycle just as external behaviors do.
Can I work with OCD without ERP training?
You can provide supportive care and accurate psychoeducation. For active OCD treatment, ERP training is important — and referring to a specialist when you’re not trained is the right clinical call.
Kristen McClure, MSW, LCSW is a licensed therapist who creates practical clinical tools to help therapists navigate the hardest moments in their work.
Browse the full library at TherapistWorksheet.com →
Sources: IOCDF clinical guidelines; Foa & Kozak (1986); Abramowitz et al. (2019)