The most effective treatment for OCD and anxiety
Living with OCD means being trapped in cycles of intrusive thoughts and compulsive behaviours. You know logically that the rituals don’t make sense, but the anxiety is so overwhelming that you feel compelled to do them anyway—wash your hands again, check the lock once more, seek reassurance just one more time. The relief is temporary; the cycle continues.
Exposure and Response Prevention (ERP) offers a way out. It’s the most effective treatment for OCD, helping people face their fears while resisting the urge to perform compulsions. At Clarity Psychology, our Melbourne psychologists are experienced in ERP and have helped many people reclaim their lives from OCD’s grip.
What is Exposure and Response Prevention?
ERP is a specialised form of cognitive behavioural therapy developed specifically for OCD and related anxiety conditions. It has two components:
Exposure involves deliberately confronting situations, objects, or thoughts that trigger obsessional anxiety. This might mean touching something you fear is contaminated, leaving the house without checking locks, or allowing an intrusive thought to exist without neutralising it.
Response Prevention means resisting the urge to perform compulsions after exposure. You don’t wash your hands, don’t go back to check, don’t seek reassurance. You sit with the anxiety and let it naturally decrease.
This combination is powerful because it teaches your brain something crucial: the anxiety you’ve been avoiding is tolerable, and the feared consequences don’t actually happen (or are manageable if they do). Over time, the situations that triggered intense anxiety become less threatening.
Understanding How OCD Works
To understand why ERP is effective, it helps to understand how OCD maintains itself:
The OCD Cycle
OCD involves intrusive thoughts (obsessions) that cause intense anxiety. To reduce this anxiety, you perform behaviours (compulsions)—either actions or mental rituals. The compulsion provides temporary relief, which negatively reinforces it, making you more likely to do it again. But the relief is short-lived, and the cycle repeats.
Common obsessions include contamination fears, fear of harming others, fears about safety (fire, burglary), need for symmetry or exactness, religious or blasphemous thoughts, and unwanted sexual thoughts.
Common compulsions include washing and cleaning, checking, counting, ordering and arranging, mental rituals (praying, reviewing), and seeking reassurance.
Why Compulsions Make OCD Worse
While compulsions reduce anxiety in the short term, they maintain OCD by preventing you from learning that the feared outcome won’t happen, preventing you from learning you can tolerate anxiety, and strengthening the belief that the intrusive thoughts are dangerous.
ERP breaks this cycle by eliminating the compulsions and allowing natural anxiety reduction to occur.
How Does ERP Work?
ERP follows a systematic process:
Assessment and Education
Your therapist will thoroughly assess your OCD—the specific obsessions, compulsions, triggers, and avoidance behaviours. You’ll learn about the OCD cycle and why ERP works. Understanding the rationale helps you commit to what can be challenging work.
Creating a Hierarchy
Together, you’ll create a list of feared situations ranked by how much anxiety they trigger—from less challenging to most difficult. This hierarchy becomes your treatment roadmap.
Graduated Exposure
Starting with moderately challenging items (not the easiest or hardest), you’ll systematically face feared situations. Exposures might be “in vivo” (real-life situations), imaginal (vividly imagining feared scenarios), or interoceptive (triggering physical sensations you fear).
Response Prevention
During and after exposure, you’ll resist performing compulsions. Your therapist will support you in tolerating the anxiety without ritualising.
Habituation and Learning
As you repeatedly face fears without compulsions, two things happen: habituation (anxiety naturally decreases over time) and inhibitory learning (you learn that the feared outcome doesn’t occur, or that you can cope if it does).
Progressing Through the Hierarchy
As lower items become manageable, you progress to more challenging exposures. Eventually, you’ll face your most feared situations.
What Does ERP Look Like in Practice?
ERP is tailored to your specific OCD presentation:
Contamination OCD
Exposures might involve touching “contaminated” objects, using public toilets, shaking hands, or not washing after touching doorknobs. Response prevention means not washing hands (or waiting increasingly long before washing) and not using hand sanitiser.
Checking OCD
Exposures might involve leaving the house after one lock check (then none), turning off the stove and walking away, or sending emails without rereading. Response prevention means not going back to check.
Harm OCD
For people with intrusive thoughts about harming others (which they would never act on), exposures might involve holding a knife, being alone with vulnerable people, or writing statements like “I might hurt someone.” Response prevention means not seeking reassurance or performing mental rituals.
Just Right/Symmetry OCD
Exposures might involve deliberately leaving things asymmetrical or “not right.” Response prevention means tolerating the discomfort without fixing it.
What to Expect in ERP Treatment
It’s Challenging—But Worth It
ERP asks you to do the opposite of what your OCD demands. This is uncomfortable, especially at first. But the discomfort is temporary, and the relief is lasting. Most people find that exposure gets easier with practice.
Therapist Support
Your therapist will guide exposures, supporting you through anxiety spikes and helping you resist compulsions. They’ll pace treatment appropriately—challenging you enough for progress but not overwhelming you.
Homework
ERP requires practice between sessions. You’ll repeat exposures independently, gradually building confidence and reducing OCD’s hold.
Duration
A typical course of ERP is 12-20 sessions, though this varies based on OCD severity and complexity. Most people see significant improvement within this timeframe.
What About Medication?
ERP can be done alone or combined with medication (usually SSRIs). Research suggests ERP alone is often sufficient for mild to moderate OCD, while combined treatment may be optimal for severe OCD.
The Evidence for ERP
ERP is the most effective treatment for OCD. Key findings include: approximately 60-80% of people who complete ERP show significant improvement, ERP produces larger and more lasting improvements than medication alone, gains from ERP are typically maintained at long-term follow-up, and ERP is recommended as the first-line psychological treatment by international guidelines.
The evidence for ERP is so strong that offering OCD treatment without ERP is considered substandard care.
Common Concerns About ERP
“I’ve tried exposure but it didn’t work”
Sometimes people do exposure without proper response prevention, or don’t continue long enough for habituation. Working with a trained ERP therapist ensures the technique is applied correctly.
“My anxiety is too high—I can’t do it”
ERP is graduated. You start with manageable challenges and work up. Your therapist will help you find the right pace.
“What if exposure makes me worse?”
Research shows ERP improves OCD; it doesn’t make it worse. Initial anxiety is expected but temporary.
“My OCD is too weird/severe for treatment”
ERP works for all types of OCD, including taboo thoughts. Therapists who specialise in OCD have seen it all and provide non-judgmental support.
Is ERP Right for You?
ERP is the treatment of choice for OCD and is also effective for health anxiety, phobias, body-focused repetitive behaviours, and some presentations of social anxiety.
ERP is appropriate if you experience obsessions and compulsions characteristic of OCD, if you’re motivated to do challenging work for lasting results, and if you’re willing to complete homework between sessions.
ERP at Clarity Psychology
Our psychologists at Clarity Psychology are trained in ERP and experienced in treating OCD. We provide thorough assessment, careful treatment planning, and supportive but effective exposure work. We know how debilitating OCD can be, and we’re committed to helping you break free.
If OCD has been controlling your life, ERP offers a proven path to recovery.
Ready to take on OCD?
Book an appointment with one of our ERP-trained psychologists and start reclaiming your life from obsessions and compulsions.
Related Treatments: CBT, ACT, Mindfulness
