I've done therapy. I have never done ERP, and I don't have an OCD diagnosis. So this isn't a "here's what worked for me" post. It's the post I wish existed when I first started asking whether some of my habits were OCD, because the answer to "how is it treated?" turned out to be clearer than almost anything else in mental health.
What's the best treatment for OCD? Exposure and response prevention, ERP for short. The International OCD Foundation calls it the proven, most effective first-line therapy for OCD in adults and kids. The UK's NICE guideline on OCD puts it at the centre too. Medication is the other main tool.
What ERP is, in plain words
OCD runs on a loop. A thought shows up, it brings dread, you do something to make the dread go away (wash, check, count, ask for reassurance, replay it in your head), and the relief teaches your brain that the ritual saved you. So the next round is worse.
ERP breaks the loop from both sides.
The exposure part means you deliberately bump into the thing that scares you. A little at first. Touching the doorknob. Leaving the stove check at one. Writing down the thought you've been running from.
The response prevention part is the hard bit. You don't do the ritual. You let the anxiety climb and you sit there with it, and you find out that it comes back down without you doing anything. Your brain needs to learn that from experience, because no amount of being told works.
HereToHelp BC describes it as confronting a feared situation systematically and safely without using compulsions. Systematically is the key word. Nobody throws you in the deep end.
What it looks like in practice
Usually you and the therapist build a ladder. At the bottom, things that make you a bit anxious. At the top, the stuff you can't imagine doing. You start low, practise in sessions and between them, and climb when the lower rungs stop scaring you as much.
For invisible OCD, the kind with harm thoughts or mental rituals, exposure can mean writing out the scary thought, reading it aloud, or listening to a recording of it. That sounds brutal. People who have done it tend to say it's hard and that it's worth it. I'd believe them more than the voice in your head that says you'll fall apart.
The part that rings true for me isn't about OCD at all. Everything useful I've ever learned, about anger and about cravings, came down to sitting with something uncomfortable without doing the thing that makes it stop. ERP is that idea, done carefully, with someone in your corner.
What about medication?
The IOCDF says SSRIs, a class of antidepressants, are the first-line medication for OCD, and that OCD often needs a different approach to dosing and a longer trial than depression does. ERP and medication are often combined. That's a conversation with your doctor or psychiatrist, and nothing on this site should replace it. I'm not going to name drugs or doses.
Doing it on your own?
There are good self-help books built on ERP. The one I'd point to is Jonathan Grayson's, because it's a real step-by-step program, including work on living with uncertainty.
Freedom from Obsessive-Compulsive Disorder
Jonathan Grayson
My take. Real exposure and response prevention, the treatment that actually works for OCD, laid out step by step.
Good to know. Exposure is hard. Better with a clinician in your corner.
Honest caveat. Exposure is hard, and doing it alone, it's easy to fool yourself, to sneak a ritual in, or to quit when it gets uncomfortable. A book is a good start or a good companion. If your OCD is running your days, a therapist trained in ERP is better.
Finding ERP in Québec
This is where it gets harder. Plenty of therapists say they do CBT. Fewer are really trained in ERP for OCD. When you call, ask straight out: "Do you treat OCD with exposure and response prevention?" If the answer is vague, keep looking.
- Public services in Québec are free. Start with your family doctor, a CLSC, or call 811 and choose option 2 (Info-Social). Waits can be long.
- In private practice, check that the person is a member of the Ordre des psychologues du Québec, which also has a page (in French) on what therapy costs.
- The IOCDF keeps a directory of therapists and support groups. It's US-centred, with some Canadian listings.
I wrote about what therapy costs in Québec and about CBT, DBT and ACT if you want the wider picture. And if you're still figuring out whether it's OCD at all, start with OCD that has nothing to do with cleaning.