OCD and Feeling Unreal: 10 Key Facts You Should Know
Imagine waking in the night, heart racing, convinced you hadn’t locked the front door. You check, walk away, but you know that nagging thought will creep back. Then you notice the walls seem “off”—everything feels distant, like you’re viewing life through a fog. Your hands are shaking. You feel unreal, as if you’re watching yourself in a film.
That’s part of what living with OCD, anxiety, and depersonalisation/derealisation can feel like. I’m Federico Ferrarese, a CBT therapist based in Edinburgh, specialising in OCD treatment. I’ve helped many people who experienced not just the classic OCD rituals, but also that sense of being detached from themselves or their surroundings. In 2025, these overlaps are better understood, and there are new ways to treat them. I want to share what is known now, what isn’t, and what you can do if you’re suffering—UK-style, no fluff.
What Are OCD, Anxiety, and Depersonalisation/Derealisation?
OCD: More Than Just Checking
Obsessive-Compulsive Disorder (OCD) involves obsessions (intrusive, unwanted thoughts, images or urges) and compulsions (repetitive behaviours or mental acts done to reduce the distress from the obsessions). These aren’t just habits; they interfere with life and cause distress.
In the UK, around 750,000 people are living with OCD at any one time—that’s about 1.2% of the population (Priory Group, 2025). It’s often underdiagnosed, misunderstood, or mislabelled. Onset is often in adolescence for men and the early twenties for women, although many cases start by age 14 (Priory Group, 2025).
Anxiety: The Big Umbrella
Anxiety is a feeling we all get. But an anxiety disorder is when worry, fear, or panic become frequent, intense, and interfere with daily life. Generalised Anxiety Disorder (GAD), panic disorder, and social phobia—these can overlap with OCD.
In England in 2023/24, common mental health conditions rose to about 22.6% for 16-64 year-olds. OCD rose from 1.3% in 2007 to 2.6% in 2023/24 (NHS Digital, 2025). That’s a big jump. Anxiety symptoms are exceptionally high among younger people (Priory Group, 2025).
Depersonalisation and Derealisation: Feeling Detached and Un-Real
Depersonalisation and derealisation aren’t just weird feelings that pop up now and then. They can hit you like a wave, pulling you away from yourself, your body, your surroundings. When I speak to clients, this is often the part no one warned them about—and yet it becomes one of the most terrifying.
Derealisation is when your world feels strange, dreamlike, and distant. Like the colours of the room are muted, sounds echo oddly, like you’re watching everything through soundproof glass. Depersonalisation is when you feel disconnected from yourself—as though your thoughts, your body, or your emotions are someone else’s. Sometimes you look in the mirror and feel like you’re observing yourself. Your hands don’t seem to belong. Your voice sounds foreign.
One of my clients, “James,” started with intense OCD checking rituals. Then, during one panic attack, he says the world slipped, like he was inside a snow globe. His edges seemed fuzzy. He could feel his heartbeat, but not his hands. He kept thinking: Is this real? Am I losing it?
Sometimes they happen together—DP/DR side by side—or one comes first, then the other. Sometimes depersonalisation creeps in after derealisation, or vice versa. It doesn’t follow rules. It just is.
Recent research shows DPDR is not rare. It’s not something only in textbooks. It shows up in people with anxiety, depression, and OCD. It’s being recognised now as a transdiagnostic phenomenon—a pattern that cuts across different diagnoses (Černis et al., 2025). Complete diagnoses of depersonalisation/derealisation disorder happen in about 1-2% of community samples according to recent studies (Hunter et al., 2023). Meanwhile, transient or mild episodes—feeling unreal for a bit of while—are far more common.
In a UK population sample using standardised diagnostic interviews, about 1.2-1.7% reported clinically significant depersonalisation/derealisation symptoms over one month (Hunter, Sierra, & David, 2004) (epidemiology data). Lifetime experiences (not disorder level) are much higher—many people report DP/DR symptoms at some point, especially after trauma, high stress, or panic.
When depersonalisation/derealisation occur alongside OCD and anxiety, they amplify everything else. Imagine your anxiety is already loud. Then these feelings come in, making you question if what you perceive is real, making everything feel “off,” which increases rumination, checking, and avoidance. It’s draining. It’s bewildering. And many people feel ashamed—afraid that others will think they’re “crazy” or that there’s something physically wrong with their brain.
It takes courage to name these experiences. It takes empathy from therapists. And it requires treatment that treats these feelings, not just the rituals or the panic.
OCD and Feeling Unreal: Why They Often Overlap (and Why That Matters)
Anxiety Causes Depersonalisation/Derealisation Sometimes
When anxiety or panic runs high, your brain can do something strange. It can push you into depersonalisation or derealisation, almost like hitting an emergency switch. It’s not a choice, and it’s not a sign of madness. It’s your mind trying to protect you from overwhelming fear by numbing things down.
A client once told me, “It was like the volume on life got turned down. My body felt far away, and the world around me looked flat, almost unreal.” That’s what people mean when they say anxiety causes derealisation. Another client said during panic, she felt like she was floating above herself, watching her arms move but not feeling they were hers — classic depersonalisation. Can you imagine how unsettling that feels?
Many people in the UK search phrases like “why does anxiety cause derealisation” or “episodes of depersonalisation anxiety panic attack” because they’re desperate to make sense of this. And the truth is, these experiences are more common than most realise. Transient episodes of DPDR happen a lot, especially when panic attacks strike.
OCD & Depersonalisation/Derealisation: The Hidden Connection
Now, here’s the bit hardly anyone talks about. People with OCD often describe DPDR, but it rarely gets recognised. You already have the intrusive thoughts, the rituals, the doubts. That constant mental strain can flip you into derealisation or depersonalisation without warning.
One young man I worked with described it perfectly: “I was checking the door lock for the tenth time, and suddenly the handle looked strange, like I couldn’t trust my eyes. I felt unreal, and that made me want to check more. It was a loop I couldn’t escape.” That’s how OCD and derealisation symptoms often dance together. The compulsions feed anxiety, the anxiety feeds DPDR, and round it goes.
Obsessive beliefs make things worse. Perfectionism, that feeling you must be certain, or that one mistake could be catastrophic — those beliefs fuel anxiety. And anxiety, in turn, can lead to episodes of DPDR. It’s not surprising that research shows stronger obsessive beliefs and higher anxiety are linked to dissociative symptoms like depersonalisation and derealisation (Saini et al., 2022).
If you’ve ever typed “feeling unreal OCD anxiety” or “OCD anxiety depersonalisation derealisation symptoms UK” into Google at 2 am, you’re not alone. That desperate search for answers is something so many people go through. And here’s the reassuring bit: just because you feel unreal, doesn’t mean you are losing touch. It means your mind is exhausted, not broken.
Why Overlapping Makes Treatment Harder
If you only target OCD in treatment, but ignore DPDR or the anxiety that triggers it, you might reduce compulsions but still feel “not quite real.” Treatment feels incomplete.
DPDR can also cause people to avoid treatment because they fear something worse is happening, such as psychosis or brain disease. That fear can add to anxiety and delay recovery.
What’s New in 2025: Data, Understanding, and Research
Better Prevalence Data in the UK
The 2023/24 NHS Adult Psychiatric Morbidity Survey shows increases in OCD and other common mental health conditions. OCD is now estimated at 2.6% of 16-64 year-olds, up from 1.3% (NHS Digital, 2025). Rates are higher among young people.
DPDR as a Transdiagnostic Target
The 2025 scoping review found that DPDR correlates strongly with anxiety disorders and shares cognitive processes, but that effective treatments for DPDR are still underdeveloped (Černis et al., 2025).
The National Comorbidity Survey-Replication found a 0.9% past-month prevalence of clinically significant DPDR, with higher rates when mood and anxiety disorders co-occur (Simeon et al., 2025).
Mechanistic Insights: Brain, Cognition, Interoception
Here’s the thing: when you feel depersonalisation or derealisation, it isn’t “all in your head” in the dismissive sense people sometimes throw around. It’s in your head and your body. Research shows that DPDR is linked to how the brain processes signals from inside you — your heartbeat, your breathing, your gut feelings — as well as the flood of information from the outside world (Saini et al., 2022).
A lot of people in the UK Google phrases like “why do I feel disconnected from my body anxiety” or “brain causes depersonalisation derealisation.” That search itself tells you something important: people don’t just want reassurance; they want to know what’s happening under the hood.
So here’s a simple way to picture it. Your brain is like a mixing desk, blending signals from inside your body (interoception) and signals from the outside world (sights, sounds, touch). When stress or OCD anxiety is high, that mixing desk can glitch. The internal channels get dialled down — a process researchers call interoceptive silencing. When those inner signals fade, you can feel detached from yourself. Add sensory overload from the outside world — bright lights, noise, constant checking — and the whole mix feels “off.” That’s when unreality floods in.
One client I worked with, “Amira,” described it beautifully. She said, “When my OCD is at its worst, it feels like my body has unplugged. I see my hands typing on my laptop, but I can’t feel them properly. My chest feels hollow. And then the office around me looks weird, like a film set, not my real life.” She thought she was going mad. But once she learned that her brain was muting internal signals because it was overwhelmed, she felt relief. She wasn’t broken. She was overloaded.
This is why people also search things like “sensory overload OCD UK” or “OCD anxiety depersonalisation derealisation symptoms UK.” They’re trying to connect their lived experience with science.
And here’s the hopeful part: once you understand that DPDR is partly your brain’s coping mechanism, you can work with it. It’s not dangerous. It’s your nervous system saying, “This is too much right now.” With therapy, grounding, and building tolerance for uncertainty, that mixing desk can rebalance.
Treatment Research & Gaps
When it comes to treatment, the story is mixed. For OCD, we’re in a stronger position. CBT, and in particular Exposure and Response Prevention (ERP), is still the gold standard (Priory Group, 2025). I’ve watched clients who were once stuck in endless checking cycles slowly reclaim their mornings, their relationships, even simple joy, just through ERP.
But add depersonalisation or derealisation into the picture, and things get trickier. Research tells us CBT can help with DPDR — there’s evidence that structured therapy reduces symptoms and helps people feel more grounded again (Hunter et al., 2023). Yet here’s the truth: full recovery, especially for people who’ve had severe, chronic DPDR for years, is less common.
I think about a client, let’s call her Sophie. She came in with classic OCD patterns: intrusive thoughts, washing rituals, and reassurance seeking. ERP helped reduce her compulsions. But she told me one day, “I can lock the door without checking ten times now. But sometimes, even when I do, it feels like I’m watching myself from outside my body. I still don’t feel real.” That’s the gap. The OCD improved. The anxiety came down. But the derealisation stayed in the background like static noise.
And Sophie isn’t alone. People across the UK search things like “OCD anxiety depersonalisation derealisation symptoms UK” or “why do I feel unreal anxiety OCD” because they’re looking for answers about this overlap. The frustrating part is that while we have plenty of trials for OCD and some for DPDR, there are very few that study the two together. And almost none that look at all three: OCD, anxiety, and depersonalisation/derealisation as a unit.
So where does that leave us in 2025? With hope, but also with work to do.
We know ERP can loosen OCD’s grip. We know that CBT can help alleviate depersonalisation. But we don’t yet have a clear, evidence-backed roadmap for when someone suffers from all three. That’s why some clients make progress, but still tell me, “I feel better, but not whole.”
The gap isn’t just in research; it’s in practice too. Many therapists in the UK aren’t trained to spot DPDR, or don’t have specific strategies for it. Sessions end up focusing only on compulsions, leaving people still feeling foggy and detached. What’s needed is an integrated approach — therapy that treats OCD and anxiety while also directly addressing derealisation and depersonalisation with grounding, interoceptive work, and emotional regulation.
Until research catches up, therapy has to be creative. In my clinic, this often means weaving ERP together with grounding exercises, sensory retraining, and helping clients build tolerance for that “unreal” feeling, rather than fearing it. It’s not perfect, but it’s a bridge across the current evidence gap.
What You Need to Know if You’re Experiencing This
Recognising the Signs
You might be experiencing:
Obsessions such as intrusive thoughts or doubts.
Compulsions such as rituals, checking, or mental acts.
Anxiety, worry, panic attacks, or constant tension.
Depersonalisation or derealisation, such as feeling detached from self or surroundings.
If DPDR happens during or after anxiety or obsessive cycles, that’s common.
Why Getting it Right Matters
Getting recognition early means less suffering. If DPDR is ignored, it can linger or make OCD and anxiety harder to treat.
Treatment should address OCD, anxiety, and DPDR together, not just compulsions or anxiety alone.
Treatment Approaches: What Works
Exposure and Response Prevention (ERP)
ERP is still the gold standard for OCD. You gradually face what triggers your obsession and resist doing the compulsion. It retrains your brain. ERP can indirectly help reduce DPDR.
CBT Adapted for Depersonalisation/Derealisation
CBT sessions may include grounding techniques, reality testing, and mindfulness. These help with the foggy, unreal feelings.
Medication
SSRIs are first-line for OCD. They reduce the anxiety load, which may help reduce DPDR episodes too.
Combined & Transdiagnostic Treatment
Treatments addressing anxiety, OCD, and DPDR together may work best, such as CBT plus ERP with specific DPDR strategies.
Self-Help, Lifestyle, Peer Support
Sleep, stress management, exercise, and social connection play a key role. Talking with peers can reduce feelings of shame and isolation.
Things Most People Don’t Talk About Enough
Partial DPDR can persist even in good periods.
Insight doesn’t remove discomfort; knowing symptoms aren’t dangerous doesn’t make them less scary.
DPDR contributes to avoidance, including of therapy itself.
Neurodiversity overlap matters—OCD and DPDR may be more common in people with ADHD or autism.
Digital life may worsen unreality, with heavy screen use linked to more reports of DPDR in recent years.
FAQ
What is the difference between derealisation and depersonalisation?
Derealisation is detachment from surroundings, while depersonalisation is detachment from self. They often occur together.
Can OCD cause DPDR?
Indirectly, yes, through anxiety, intrusive thoughts, and mental strain.
Is DPDR a sign of psychosis?
Not usually. People with DPDR know the feeling is strange, unlike in psychosis, where reality testing is lost.
How long does treatment take?
It varies. OCD treatment with CBT and ERP takes weeks to months. With DPDR, it can take longer, but improvement is possible.
Are there medications for DPDR?
No specific medication exists. SSRIs may help indirectly, but therapy is more effective.
What should I do if I have OCD, anxiety, and DPDR?
Get assessed. Tell the clinician about all symptoms. Ask for CBT with ERP and grounding strategies.
Conclusion
In 2025, we know more than ever about OCD, anxiety, and depersonalisation/derealisation. We have stronger UK data showing these experiences are common. DPDR is not something to ignore. Treatments—especially CBT with ERP and adaptations for DPDR—can help.
If you’re living with OCD, anxiety, or DPDR, you’re not alone. Help is out there, and recovery is possible. So, what do you think—are you ready to take the first step?
NHS Digital. (2025). Adult Psychiatric Morbidity Survey: Common mental health conditions (CMHCs) England, 2023/24.
Priory Group. (2025). OCD statistics: Prevalence, cost, impact in the UK.