The best treatment for OCD depends on how severe it is, and that turns out to be useful information rather than an evasion.
A 2022 review by Nezgovorova and colleagues examined the major treatment guidelines for OCD and identified a common structure described as stepped care. Treatment begins with the least intensive approach likely to work, and moves to something more involved only if needed.
For most people the first step is cognitive behavioural therapy, specifically exposure and response prevention. ERP involves gradually facing the situations and thoughts that trigger obsessions while resisting the compulsion that usually follows. It asks something real of a person, and it works. Where therapy alone proves insufficient, medication can be added, usually an antidepressant of the SSRI class. For people with severe OCD, combining therapy and medication tends to produce the best results.
The practical implication is that nothing has to be tackled all at once, and treatment can be adjusted as it goes. Beginning with therapy is a reasonable, evidence-based first move for most people.
If OCD has been making your life smaller, effective help exists and you are entitled to access it.
What this review actually did
This paper by Nezgovorova et al. isn't a new experiment on patients. It's a review — a piece of writing that pulls together findings from clinical guidelines and previously published studies to summarise where the evidence currently stands on treating OCD (obsessive-compulsive disorder) in adults. OCD involves obsessions (intrusive, unwanted thoughts, images or urges) and compulsions (repetitive behaviours or mental acts done to relieve the distress those thoughts cause). Because so much research already exists, reviews like this help clinicians and patients see the bigger picture without needing to read every individual trial.
What the guidelines recommend
The review compares two major sets of treatment guidelines. UK guidance (NICE) recommends starting with lower-intensity psychological treatment, including ERP (Exposure and Response Prevention, a form of CBT where a person gradually faces feared situations while resisting the compulsion). This reflects a 'stepped care' model — you begin with the least intensive effective option and only escalate if needed. Under this model, combined treatment (therapy plus medication) is reserved for adults with severe functional impairment, or for those who haven't responded adequately to a full course of an SSRI (a type of antidepressant medication) taken alone for 12 weeks, or to CBT alone.
US guidelines (APA) frame things slightly differently, listing three first-line options: SSRI alone, CBT alone, or the combination. Combined treatment is recommended when someone hasn't responded well to one treatment alone, or when OCD is severe.
What the underlying research shows
Here the picture gets more interesting — and more nuanced. One systematic review and meta-analysis (a method for statistically combining results across many trials) covering studies from 1993 to 2014 found that combining medication with CBT was not significantly better than CBT plus a placebo. In other words, in that body of evidence, adding a real drug on top of therapy didn't clearly outperform adding an inactive substance.
However, a more recent systematic review and meta-analysis, which searched trial registers maintained by the Cochrane Collaboration (an international network known for rigorous evidence synthesis), came to a different conclusion: combined treatment appeared more effective than psychological treatment alone, at least for people with severe OCD.
A separate study, described as an 'optimal treatment' trial, found combined treatment looked most effective overall, particularly compared with CBT alone — but SSRI treatment alone came out as the most cost-effective option.
Why this matters, and its limits
Taken together, this tells us the evidence on combination treatment is genuinely mixed rather than settled, and severity seems to be an important factor in which approach performs best. It also highlights a real-world tension: the most clinically effective option isn't always the most cost-effective one, which matters for healthcare systems and individual access to care.
Because this is a review of other studies rather than new data, its conclusions are only as strong as the research it draws on, and the abstract doesn't specify exact numbers, effect sizes, or how many studies were included. If OCD is affecting your life, please consider reaching out to a qualified professional — good, evidence-based options exist, and getting personalised advice is worth it.