What is OCD?
Obsessive-Compulsive Disorder (OCD) is a mental health condition characterised by two core components: obsessions and compulsions. People with OCD experience intrusive thoughts that feel uncontrollable and distressing, followed by an urgent need to perform rituals or behaviours to reduce the anxiety they create. While occasionally having unwanted thoughts is normal, OCD involves a persistent cycle that consumes significant time and energy, interfering with work, relationships, and daily life.1
OCD is more common than many people realise, affecting approximately 3% of Australians across all ages, genders, and backgrounds.2 It is not about being tidy or perfectionist—these are common misunderstandings. Instead, OCD is a serious anxiety disorder where the person feels trapped in a cycle of distressing thoughts and exhausting rituals. The good news is that OCD is highly treatable. Evidence-based therapies, particularly Exposure and Response Prevention (ERP), have helped thousands of Australians break free from OCD and reclaim their lives.
At Mind Health, we specialise in evidence-based OCD treatment. Our experienced psychologists understand the distress OCD causes and work collaboratively with you to target the obsession-compulsion cycle at its root. We combine cognitive-behavioural therapy with modern approaches like ERP and Acceptance and Commitment Therapy to help you build a life where OCD no longer drives your decisions.
If you are struggling with unwanted thoughts, repetitive behaviours, or the exhaustion of constant mental checking, you are not alone—and treatment can help. OCD frequently occurs alongside other conditions such as depression, generalised anxiety, and chronic stress. Our psychologists assess and treat the whole picture, not just individual symptoms.
Signs & Symptoms
OCD manifests differently in each person, but all forms involve obsessions, compulsions, or both. People often experience intense anxiety when obsessions occur, followed by temporary relief after performing compulsions. Over time, this cycle becomes more time-consuming and harder to control. It is important to recognise that OCD is not simply anxiety—it is a specific pattern where thoughts and rituals become deeply intertwined.
Common Obsessions
- Contamination fears: Excessive worry about germs, dirt, bodily fluids, or toxins; fear of contaminating others
- Harm-related obsessions: Intrusive fears of harming oneself or others, violent or aggressive images, fear of causing accidents
- Symmetry and order: Need for perfect symmetry, alignment, or arrangement; distress when things feel ‘just right’
- Forbidden or taboo thoughts: Unwanted thoughts about sex, religion, violence, or other sensitive topics that feel completely out of character
- Need for certainty: Excessive doubt, constant need for reassurance, inability to tolerate uncertainty
- Responsibility and perfectionism: Fear of making mistakes, excessive responsibility for others’ safety, need for perfect completion of tasks
Common Compulsions
- Washing and cleaning: Excessive hand washing, showering, or cleaning rituals to remove feared contamination
- Checking: Repeatedly checking locks, appliances, or body for signs of harm; excessive monitoring
- Arranging and ordering: Arranging items symmetrically, lining things up perfectly, or organising in a specific way
- Counting: Counting objects, steps, breaths, or words; performing actions a specific number of times
- Mental rituals: Mental checking, reviewing, or rehearsing; praying or repeating phrases mentally
- Reassurance seeking: Repeatedly asking others for reassurance that nothing bad will happen or that you are not a bad person
- Avoidance: Avoiding situations, places, or people that might trigger obsessions
Pure O (Primarily Obsessional OCD): Some people experience mostly obsessions with few visible compulsions. Instead, compulsions may be entirely mental (thinking, reviewing, reassurance-seeking). This form is often underdiagnosed because the external signs are less obvious, but it causes just as much distress and is equally treatable.
If you recognise these patterns in yourself, it is important to seek help early. The longer OCD goes untreated, the more entrenched the cycle becomes. Treatment at any stage can be effective.
Causes
OCD develops through a combination of biological, psychological, and environmental factors. Understanding these factors can help remove shame and guilt—OCD is not caused by character flaws or weakness.
Biological Factors
Research suggests that OCD involves differences in brain chemistry, particularly in serotonin regulation and activity in the basal ganglia and related circuits.3 These regions normally help filter out unwanted thoughts; when they function differently, unwanted thoughts can feel more intrusive and harder to dismiss. OCD also shows a genetic component—if a close family member has OCD, your risk is higher. However, genetics alone does not cause OCD; other factors must also be present.
Psychological Factors
OCD often involves distorted thinking patterns and learned behaviours. Some people interpret unwanted thoughts as highly significant (‘If I think it, I must want it’ or ‘If I think it, it might happen’). Others develop beliefs that they must control their thoughts perfectly or face catastrophe. Over time, compulsions become reinforced because they temporarily reduce anxiety, making the cycle stronger. Past learning experiences, particularly those involving uncertainty or unpredictability, can also contribute.
Environmental and Life Factors
OCD often emerges during periods of significant stress, major life changes, trauma, illness, or following a period of heightened anxiety. For some, a single distressing event can trigger the onset. In others, gradual accumulation of stress gradually shifts the threshold for developing OCD. Environmental factors alone typically do not cause OCD, but they can act as triggers in vulnerable people.
Age of Onset
OCD often first appears in late adolescence or early adulthood (ages 15–30), though it can develop at any age, including childhood. Early intervention is important, as untreated OCD can become more severe and entrenched over years.
Our Approach to OCD Treatment
At Mind Health, we take a personalised, evidence-based approach tailored to your specific presentation of OCD. We begin with a detailed assessment to understand your obsessions, compulsions, and how they affect your life. Treatment typically involves a combination of psychological therapies proven to be effective for OCD.
Exposure and Response Prevention (ERP)
ERP is considered the gold standard treatment for OCD and is supported by decades of research.4 ERP involves gradually facing feared situations (exposures) without performing the usual rituals or compulsions (response prevention). Initially, this creates anxiety, but with repeated exposures, anxiety naturally decreases through a process called habituation. ERP helps break the obsession-compulsion cycle at its core.
What to expect: Your psychologist will help you create a hierarchy of feared situations, starting with less challenging exposures and building toward more difficult ones. Sessions typically last 60–90 minutes. Most people experience meaningful improvement in 12–20 sessions.
Cognitive-Behavioural Therapy (CBT) for OCD
CBT for OCD focuses on identifying and gently challenging the unhelpful beliefs that fuel obsessions—such as overestimating threat, believing you must control thoughts perfectly, or assuming you are responsible for preventing harm. Through guided discussion and behavioural experiments, you learn to evaluate these beliefs more realistically and respond to obsessions differently. CBT is often combined with ERP for maximum effectiveness.
What to expect: Your psychologist will help you identify thought patterns, test them against evidence, and build more flexible, realistic responses. This typically takes 12–20 sessions.
Acceptance and Commitment Therapy (ACT)
ACT is particularly helpful for people with treatment-resistant OCD or those who struggle with traditional ERP alone. Rather than fighting or controlling obsessions, ACT teaches you to observe them with distance and curiosity while committing to actions aligned with your values. This approach reduces the emotional power of obsessions and helps you live a meaningful life despite their presence.
What to expect: Your psychologist will guide you through mindfulness exercises, values clarification, and committed action. ACT can be combined with ERP or used as a standalone approach. Typical duration is 12–20 sessions.
Inference-Based Cognitive Therapy (I-CBT)
I-CBT is a newer, evidence-supported approach that targets the root of OCD: inferential confusion. Rather than focusing only on anxiety, I-CBT helps you recognise and correct the ‘inferential chains’ that make obsessions seem credible. This approach is particularly effective for Pure O (primarily obsessional OCD) and doubt-driven presentations.
What to expect: Your psychologist will help you identify the inferences (conclusions) you draw from intrusive thoughts and test them against evidence. This approach typically requires 12–20 sessions.
Medication and Therapy
While our psychologists do not prescribe medication, we work closely with your GP or psychiatrist. Selective serotonin reuptake inhibitors (SSRIs) can be helpful for some people with OCD, particularly when combined with psychological therapy. Our team can liaise with your doctor to ensure your medication and therapy are working together optimally.
Tips on Managing OCD
While professional treatment is the most effective path to recovery, there are practical strategies you can begin using now to help manage OCD symptoms and prevent them from worsening:
- Resist compulsions gradually: Rather than fighting urges completely, try delaying the compulsion by a few minutes, then gradually extend the delay—this builds confidence that you can tolerate anxiety without immediately ritualising
- Practice ERP principles at home: Between therapy sessions, try small exposures to your feared situations without performing compulsions—start small and let your therapist guide you on appropriate exposures
- Limit reassurance seeking: Asking others for reassurance provides temporary relief but strengthens OCD long-term—try sitting with the uncertainty instead
- Practice mindfulness: Learn to observe obsessive thoughts without judgment or struggle, letting them pass like clouds—apps like Headspace or Insight Timer offer guided mindfulness practice
- Maintain a structured routine: Regular sleep, exercise, and daily routines reduce overall anxiety and make you more resilient when obsessions arise
- Educate yourself: Understanding how OCD works reduces shame and increases motivation for evidence-based therapy—see resources from OCD Australia or the International OCD Foundation
- Connect with others: Consider joining an OCD support group (many available online) where you can share experiences with others who truly understand
- Seek specialist support: If OCD is significantly affecting your life, reaching out to a psychologist experienced in OCD treatment is the most important step you can take
What to Expect
Your First Appointment
Your first session is about getting to know you and understanding your OCD in detail. You will discuss:
- The specific obsessions and compulsions you experience
- How long OCD has been affecting you and how it started
- The impact on your work, relationships, and daily life
- Your medical history, current medications, and any previous therapy
- Your goals for treatment
This session is confidential and judgment-free. Your psychologist will provide information about OCD and discuss how therapy can help.
Assessment and Measurement
After the initial session, your psychologist may use a standardised assessment tool called the Y-BOCS (Yale-Brown Obsessive Compulsive Scale) to measure the severity of your OCD.5 This provides a baseline against which you can measure your progress. The Y-BOCS is repeated periodically to track improvement.
Treatment Planning
Based on your assessment, your psychologist will discuss which therapeutic approach(es) are most likely to help. This might be ERP, CBT, ACT, or a combination. You will discuss the rationale, what to expect, and any concerns you have. Treatment planning is collaborative—your input is essential.
Ongoing Sessions
Most people with OCD attend weekly sessions of 50–60 minutes. Sessions typically include:
- Review of homework: Discussion of any exercises you have tried between sessions
- Psychoeducation: Learning more about OCD and how your specific symptoms fit the patterns
- Exposure and/or cognitive work: The core of treatment—practising tolerating anxiety or challenging unhelpful beliefs
- Planning: Deciding on homework for the coming week to consolidate what you have learned
Duration of Treatment
Most people experience meaningful improvement in 12–20 sessions. Some require fewer sessions if their OCD is mild; others may need 20–30 sessions or more if OCD is severe or long-standing. Your psychologist will discuss expected duration at the outset.
Progress and Plateau
Progress is not always linear. Some weeks you will feel significant improvement; other weeks you may feel stuck or have a setback. This is normal and does not mean therapy is not working. Your psychologist will help you interpret these fluctuations and adjust your approach if needed.
Accessing Treatment
There are several pathways to access OCD treatment at Mind Health, depending on your circumstances:
Frequently Asked Questions
Is OCD just about being neat and clean?
This is a common misunderstanding. OCD is not about perfectionism or preferences for order. While some people with OCD do have contamination fears that lead to cleaning compulsions, many others experience obsessions and compulsions unrelated to cleanliness—such as harm obsessions, taboo thoughts, or the need for certainty. Even those with contamination-related OCD describe their rituals as exhausting and irrational, very different from someone who simply enjoys a tidy space. OCD causes significant distress and interferes with functioning.
Can OCD be cured?
While there is no ‘cure’ in the sense that OCD completely disappears, evidence-based treatment like ERP is highly effective. Most people who complete treatment experience significant improvement—a reduction in obsessive thoughts and compulsions of 60–80%.4 Many describe their OCD as no longer significantly interfering with their life. With maintenance and occasional ‘booster’ sessions, most people maintain their gains long-term. The goal of treatment is not to eliminate thoughts but to break the cycle of anxiety and compulsion.
How long does treatment take?
This varies depending on the severity of your OCD, how long you have had it, and how actively you engage with treatment. Most people experience meaningful improvement in 12–20 weekly sessions (approximately 3–5 months). Some require fewer sessions; others may need 25–30 sessions if OCD is severe or long-standing. Your psychologist will discuss expected duration with you at the start.
Will I have to face my fears during ERP?
Yes, ERP involves gradual exposure to feared situations. However, ‘gradual’ is key—your psychologist will work with you to create a hierarchy of exposures, starting with less challenging ones and building upward. You are in control; you will not be forced into situations you are not ready for. The goal is to help you learn that you can tolerate anxiety without performing compulsions, and that anxiety naturally decreases over time. Most people find ERP empowering rather than traumatic when delivered skillfully.
Can children have OCD?
Yes, OCD can begin in childhood, though it is often underdiagnosed. Children with OCD may hide their symptoms or express them differently—for example, asking parents for repeated reassurance or refusing to touch certain things. Early intervention is important. If you are concerned about your child, speak to your GP or a child psychologist experienced in OCD. Our team can advise on age-appropriate assessment and treatment approaches.
What if my OCD is about harm, violence, or taboo thoughts?
Harm and taboo obsessions—such as violent, sexual, or blasphemous intrusive thoughts—are common in OCD and cause deep shame. It is crucial to understand that having an intrusive thought does not mean you want to act on it or that you are a bad person. These thoughts are a symptom of OCD, not a reflection of your character or values. Treatment is highly effective for this presentation. Your psychologist will help you understand that your obsessions do not define you and will guide you through ERP or other evidence-based approaches.
Can medication help?
For some people, medication (particularly selective serotonin reuptake inhibitors or SSRIs) can help reduce OCD symptoms alongside psychological therapy. Research shows that the combination of medication and therapy is often more effective than either alone.6 However, medication alone is typically less effective than therapy. If you are interested in medication, discuss this with your GP or psychiatrist. Our psychologists will work collaboratively with your doctor to ensure medication and therapy support each other.
Is online or telehealth therapy effective for OCD?
Yes, research shows that telehealth-delivered CBT and ERP for OCD can be as effective as in-person therapy, particularly when the therapist is experienced in OCD treatment.7 Telehealth can be especially convenient for people in regional areas or those with mobility constraints. We offer both in-person and online sessions—discuss which option suits you best during your first contact.
Further Reading
External Resources and Support
Get Started
If you or someone you care about is struggling with OCD, our experienced psychologists at Mind Health in Parramatta and Sydney are here to help.
1300 084 200Book AppointmentMake a Referral
References
- American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.
- Australian Institute of Health and Welfare (AIHW). (2021). Mental health services in Australia 2020–21. Canberra: AIHW. Based on prevalence estimates from epidemiological surveys.
- Stein, D. J., Costa, D. L., Lochner, C., Reddy, Y. C., Shavitt, R. G., Rauch, S. L., … & Simpson, H. B. (2019). Obsessive-compulsive disorder. Nature Reviews Disease Primers, 5(1), 52.
- Foa, E. B., Yadin, E., & Lichner, T. K. (2012). Exposure and Response (Ritual) Prevention for OCD in adolescents and adults: A therapist guide. Oxford University Press. Meta-analyses demonstrate 60–80% symptom reduction with ERP.
- Goodman, W. K., Price, L. H., Rasmussen, S. A., Mazure, C., Delgado, P., Heninger, G. R., & Charney, D. S. (1989). The Yale-Brown Obsessive Compulsive Scale: I. Development, use, and reliability. Archives of General Psychiatry, 46(11), 1006–1011.
- Simpson, H. B., Foa, E. B., Liebowitz, M. R., Ledley, D. R., Huppert, J. D., Cahill, S., … & Campeas, R. (2013). A randomized, controlled trial of cognitive-behavioral therapy for augmenting pharmacotherapy in obsessive-compulsive disorder. American Journal of Psychiatry, 170(7), 760–766.
- Mahoney, A. E. J., Jedel, S., & Riemann, B. C. (2020). A randomized, wait-list controlled pilot trial of interoceptive exposure for OCD. Journal of Obsessive-Compulsive and Related Disorders, 24, 100484.
- Abramowitz, J. S., Taylor, S., & McKay, D. (2009). Obsessive-compulsive disorder. The Lancet, 338(9688), 491–499.
- Rachman, S. (2003). The treatment of obsessions. Oxford University Press.
- Gillihan, S. J., & Foa, E. B. (2010). Compulsions, trauma, and OCD. In Obsessive-Compulsive Disorder: Subtypes and Spectrum Conditions (pp. 56–78). Elsevier.
- Wheaton, M. G., Abramowitz, J. S., Berman, N. C., Riemann, B. C., & Hale, L. R. (2010). The relationship between obsessive beliefs and OCD symptom dimensions. Behavioral Research and Therapy, 48(10), 949–954.
- Twohig, M. P., & Levin, M. E. (2017). Acceptance and commitment therapy as a treatment for anxiety disorders. Psychiatric Clinics of North America, 40(4), 751–770.
- Wilhelm, S., & Steketee, G. S. (2006). Cognitive therapy for obsessive compulsive disorder: A guide for professionals. New Harbinger Publications.
- Belloch, A., Roncero, M., García-Soriano, G., Fernández-Álvarez, H., & Carrió, C. (2011). Intrusive thoughts in obsessive-compulsive disorder (OCD): The role of cognitive variables. International Journal of Cognitive Therapy, 4(1), 78–91.
- Australian Psychological Society. (2010). Evidence-based psychological interventions in the treatment of mental disorders: A literature review. Melbourne: APS. Recommendations for OCD treatment guidelines.