OCD and Dissociation: Understanding Derealization, Depersonalization, and Treatment

If you've been experiencing OCD and dissociation at the same time, you may feel confused, frightened, or unsure of what's happening. Many people with obsessive-compulsive disorder (OCD) experience dissociative symptoms, including derealization and depersonalization. These experiences can feel unsettling, especially when OCD already causes significant anxiety and uncertainty.

Derealization involves feeling detached from the world around you, while depersonalization creates a sense of feeling detached from yourself. Although these experiences can feel alarming, they do not mean you are losing touch with reality or that something is “wrong” with you. In fact, they are recognized as protective responses to overwhelming stress and anxiety, both of which commonly occur alongside OCD.

This article explores the relationship between OCD and dissociation, including why it happens, what it feels like, which OCD themes are most commonly associated with dissociative experiences, and how evidence-based treatment can help.

Note: This article is intended for educational purposes only and is not a substitute for professional assessment, diagnosis, or treatment.

This article was written in August 2024 and updated on June 15, 2026. Clinically reviewed by the team at Radcliffe Psychotherapy Clinic, a Toronto-based practice specializing in ADHD therapy for adults and professionals.

Can OCD Cause Dissociation?

It’s true that OCD can cause dissociation. While not everyone with OCD experiences dissociative symptoms, research and clinical experience suggest that dissociation can occur when anxiety becomes intense, chronic, or overwhelming.

Dissociation is often understood as the mind's attempt to create distance from distressing emotions or experiences. OCD creates a constant cycle of intrusive thoughts, uncertainty, fear, and compulsive behaviours. Over time, this ongoing state of hypervigilance can become exhausting. For some people, the brain responds by creating a sense of detachment from thoughts, emotions, surroundings, or even themselves.

This can show up as derealization, depersonalization, feeling emotionally numb, or feeling disconnected from the present moment. Importantly, these experiences are not signs of psychosis. People experiencing dissociation typically recognize that something feels different or unreal, even while understanding that reality itself has not changed.

What Is Dissociation? Derealization vs. Depersonalization vs. DPDR

Dissociation is an umbrella term describing experiences of disconnection from thoughts, emotions, memories, identity, or surroundings. It exists on a spectrum, ranging from mild experiences such as zoning out during a stressful day to more persistent symptoms that can significantly affect daily functioning.

Derealization

Derealization means you may feel detached from your surroundings. Many people describe it as feeling as though they are living in a dream, watching life through a foggy window, or observing the world from behind glass.

Common experiences include:

• The world appearing unreal, distant, or dreamlike

• Colours seeming muted or distorted

• Feeling disconnected from familiar places

• Experiencing surroundings as foggy or artificial

Depersonalization

Depersonalization involves feeling detached from yourself rather than your surroundings. Some people describe it as feeling like an observer of their own life rather than an active participant.

Common experiences can be:

• Feeling disconnected from your body

• Feeling detached from your thoughts or emotions

• Feeling like you are watching yourself from outside your body

• Feeling emotionally numb or robotic

Depersonalization-Derealization Disorder (DPDR)

Depersonalization-Derealization Disorder (DPDR) is a diagnosable condition characterized by persistent or recurring depersonalization, derealization, or both. According to the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition), which is the primary diagnostic guide used by mental health professionals to define and diagnose mental health conditions based on standardized criteria, these symptoms must cause significant distress or impairment and cannot be better explained by another medical or mental health condition.

Experience	What It Feels Like
Derealization	The world feels unreal or dreamlike
Depersonalization	You feel detached from yourself
DPDR	Persistent depersonalization and/or derealization causing significant distress

---

Why OCD Triggers Dissociation: The Mechanisms

There is no single explanation for why dissociation occurs in OCD. Instead, researchers believe a combination of cognitive, behavioural, emotional, and neurological factors may contribute to these experiences. 

Cognitive Dissonance

Individuals with OCD often grapple with intrusive thoughts that conflict with their beliefs and values. This discrepancy, known as cognitive dissonance, can be profoundly distressing. For example, someone experiencing harm OCD may have intrusive thoughts about hurting a loved one despite deeply caring about that person. Holding these opposing experiences at the same time can create intense distress. As a coping mechanism, the mind may induce a sense of unreality or detachment to distance itself from the discomfort caused by these conflicting thoughts.

Compulsive Behaviours

OCD is characterized by repetitive behaviours (compulsions) aimed at reducing anxiety triggered by obsessive thoughts. Paradoxically, these compulsions can contribute to derealization. Excessive checking, for instance, might disrupt a person’s sense of presence and create a feeling of disconnection from their surroundings. The mind, engrossed in the ritualistic behaviour, may temporarily escape the overwhelming reality into a state of detachment.

Anxiety and Fear

OCD is inherently linked to heightened anxiety and fear. When the nervous system remains activated for extended periods, dissociation can emerge as a protective response. Rather than remaining fully engaged with overwhelming emotions, the brain may create distance from them. Many people notice dissociative symptoms becoming stronger during periods of heightened anxiety, panic, or stress. 

Underlying Neurobiology

Emerging research suggests there may be overlapping neurological mechanisms involved in both OCD and dissociative experiences. Some studies have identified associations between obsessive-compulsive symptoms and higher levels of dissociation, although researchers are still working to understand exactly why this occurs.

Rather than viewing OCD and dissociation as entirely separate experiences, researchers are recognizing that anxiety, emotional regulation, attention, and self-awareness may interact in complex ways.

The Reassurance-Seeking Cycle

For some people, the dissociation itself can become the focus of OCD. They may repeatedly ask themselves questions such as:

• "Do I feel real right now?"

• "Am I still dissociating?"

• "What if I never feel normal again?"

This type of mental checking functions much like any other OCD compulsion. Unfortunately, the more someone monitors their internal experience, the more noticeable and distressing the dissociation can become.

Not everyone with OCD experiences dissociation. However, if you do, it's important to understand it's a common symptom and doesn't signify you're "going crazy."

OCD Themes Commonly Linked to Dissociation

While dissociation can occur with any type of OCD, it can be more common when OCD involves intense rumination or self-monitoring, such as in these experiences:

• Existential OCD, which may involve questioning reality, existence, or consciousness

• Sensorimotor OCD, which includes becoming hyperaware of bodily sensations or mental processes

• Real event OCD, often involving repeatedly reviewing past experiences

• Identity-related OCD, including those relating to persistent doubt about your thoughts, feelings, or sense of self

The common thread is that these themes can keep a person's attention focused inward for long periods of time. When combined with high levels of anxiety, that intense self-monitoring can sometimes contribute to feelings of derealization or depersonalization.

---

What Dissociation Feels Like When You Have OCD 

Dissociation can feel different from person to person, but many people describe it as unsettling, confusing, and difficult to put into words. When it occurs alongside OCD, it can create additional fears, questions, and challenges that make an already distressing experience feel even more overwhelming. 

Heightened Anxiety

For many people, dissociation feels frightening because it feels unfamiliar. You may suddenly notice that the world feels dreamlike, distant, or somehow "off," and immediately begin wondering what’s happening. OCD often latches onto that uncertainty, leading to questions like, "What if I'm losing touch with reality?" or "What if this never goes away?" As anxiety builds, the feeling of unreality often becomes more noticeable, creating a cycle that can be difficult to break.

Impaired Daily Functioning

Dissociation can make everyday activities feel much more difficult. Tasks that normally require little thought, such as working, driving, having conversations, or running errands, may suddenly feel more effortful. Some people describe feeling like they are moving through life on autopilot or watching events unfold from a distance. Even when they continue functioning outwardly, they feel exhausted and isolated.

Focus Obsession

For some people, the dissociation itself becomes the focus of OCD. Instead of worrying about the original obsession, they become preoccupied with whether they feel real, present, or connected to their surroundings. They may constantly monitor their thoughts, emotions, or environment for signs that something is wrong. The more attention they give to these sensations, the more intense and distressing they often seem.

Compulsion Interference

Attempts to "feel normal again" can become compulsions, too. Someone might repeatedly seek reassurance from others, mentally review how they felt before the dissociation started, or constantly check whether their surroundings look real. These behaviours may provide temporary relief, but they often reinforce the belief that the dissociation is dangerous and needs to be monitored or fixed immediately.

Misdiagnosis Concerns

Many people experiencing dissociation worry that they are developing psychosis, schizophrenia, or another severe mental health condition. This fear can be especially intense for individuals whose OCD already centres on health, safety, or losing control. While proper assessment is always important, dissociation is generally different from psychosis because people typically recognize that the experience feels strange or unreal, even if they cannot fully explain it.

Fear of Losing Control

A fear of losing control is a common theme in OCD, and dissociation can intensify that fear. Some people worry they will become permanently disconnected from reality, lose awareness of themselves, or never feel normal again. Others fear they may suddenly stop functioning or become unable to trust their own thoughts and perceptions. These fears can be incredibly distressing, but they are also a common part of the OCD-dissociation cycle.

When to Be Concerned

While dissociation can be a symptom of anxiety and OCD, there are times when additional support is important. Consider seeking professional assessment if dissociation is making it difficult to work, maintain relationships, care for yourself, or manage daily responsibilities. It’s also important to seek help if you are experiencing thoughts of self-harm, feel unsafe, or suspect your dissociation may be connected to past trauma. A mental health professional can help determine what may be contributing to your symptoms and recommend an appropriate treatment approach.

Treatment for OCD and Dissociation

Exposure and Response Prevention (ERP)

Exposure and Response Prevention (ERP) is considered the gold-standard treatment for OCD. ERP involves gradually approaching feared thoughts, situations, or sensations while resisting compulsive responses.

When dissociation is present, ERP may require additional adaptations. A therapist might incorporate grounding exercises before exposures, shorten exposure periods, or use body-based strategies to help maintain present-moment awareness throughout the process.

Cognitive Behavioural Therapy (CBT)

Cognitive Behavioural Therapy (CBT) helps people identify and challenge unhelpful thought patterns that contribute to anxiety and distress. CBT can be particularly helpful for easing catastrophic interpretations of dissociative experiences.

Many people experiencing OCD and dissociation begin to fear the symptoms themselves. CBT can help create a more balanced understanding of what these experiences mean and reduce the anxiety surrounding them.

Mindfulness and Grounding Techniques

Mindfulness and grounding strategies can help strengthen your connection to the present moment. Rather than trying to force dissociation to disappear, these techniques encourage gentle awareness of current experiences.

Helpful grounding exercises include:

• The 5-4-3-2-1 technique: identify five things you can see, four you can touch, three you can hear, two you can smell, and one you can taste

• Holding a cold object or splashing cold water on your hands

• Paced breathing, such as inhaling for four counts and exhaling for six

• A body scan exercise that gradually brings attention to different parts of your body

  
  

These techniques do not eliminate dissociation immediately, but they can help soothe your distress and strengthen present-moment awareness over time.

Medication

Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed for OCD. While medication does not directly target dissociation, reducing overall anxiety and OCD symptoms may help lessen dissociative experiences for some people.

Medication decisions should always be discussed with a qualified physician or psychiatrist.

Trauma-Informed Considerations

For some people, dissociation may have roots in both OCD and past traumatic experiences. In these situations, treatment may need to address more than obsessive-compulsive symptoms alone.

Trauma-informed approaches such as Eye Movement Desensitization and Reprocessing (EMDR), somatic therapies, trauma-focused CBT, or other evidence-based trauma treatments may be integrated alongside OCD treatment when clinically appropriate.

Frequently Asked Questions

Can OCD cause derealization?

Yes, OCD can contribute to derealization through chronic anxiety, hypervigilance, rumination, and compulsive behaviours. When the brain remains in a prolonged state of stress, some people begin to feel detached from their surroundings or as though the world around them is unreal. While unsettling, this is a recognized experience that can occur alongside OCD.

Can OCD cause depersonalization?

Yes, some people with OCD experience depersonalization, particularly during periods of intense anxiety or emotional overwhelm. This may feel like being disconnected from your thoughts, emotions, or body, or like you are observing yourself from the outside. As with derealization, depersonalization can be a response to prolonged stress and anxiety.

Is dissociation in OCD the same as DPDR?

Not necessarily. Dissociation can occur as a symptom of OCD and anxiety without meeting the criteria for Depersonalization-Derealization Disorder (DPDR). DPDR is a separate diagnosis involving persistent or recurring symptoms that cause significant distress or impairment in daily life.

Does ERP work if I dissociate?

In many cases, yes. Exposure and Response Prevention (ERP) remains one of the most effective treatments for OCD, even when dissociation is present. A therapist may adjust the treatment approach by incorporating grounding strategies, shorter exposure exercises, or other techniques to help you stay present during exposures.

How do I stop dissociating during an OCD spike?

Grounding exercises, mindfulness strategies, and slowing down compulsive checking can all help. Techniques such as the 5-4-3-2-1 grounding exercise, paced breathing, or focusing on physical sensations may help reconnect you with the present moment. Working with a therapist can also help you identify the triggers that contribute to dissociation.

Will treating my OCD make the dissociation go away?

Many people notice dissociative symptoms improve as their OCD and anxiety become more manageable. However, the relationship between OCD and dissociation is complex, and some people may benefit from additional support if trauma, chronic stress, or other factors are contributing to their symptoms. A personalized treatment plan can help address both experiences together.

Working with a Toronto OCD Therapist

Living with OCD and dissociation can feel isolating, especially when your symptoms are difficult to explain to others. The good news is that effective, evidence-based treatment is available.

At Radcliffe Psychotherapy Clinic in Toronto, Shlomo Radcliffe, RP, DCP, CAMS-II and our team of experienced therapists support adults navigating OCD, anxiety, dissociation, and related challenges. We take a personalized approach, adapting evidence-based therapies to each person's unique experiences and goals.

If you're looking for support, we're here to help you better understand what you're experiencing and develop strategies for moving forward.

To learn more about our OCD therapy services or book an appointment, please contact our team today.