Existential OCD: 6 Key Signs You May Be Experiencing It

Picture this. You’re walking through the Meadows in Edinburgh on a crisp autumn afternoon. The leaves are crunching under your shoes, the air smells faintly of coffee drifting from a nearby café, and for a moment, everything feels calm. Then suddenly—like a lightning bolt—your mind whispers: “What if none of this is real? What if life has no meaning?” The peaceful moment is gone. You’re caught in a spiral, searching for answers you know you’ll never find.

If this feels familiar, you’re not alone. I’m Federico Ferrarese, a CBT therapist based in Edinburgh specialising in OCD treatment. Over the years, I’ve spoken with many people who wrestle with these very questions. They don’t just think deeply—they feel trapped by thoughts about existence, death, and reality itself. This is what we call existential OCD, a lesser-known but very real subtype of obsessive-compulsive disorder.

In this article, I want to break down six key signs that point to existential OCD. I’ll explain them simply, share insights you won’t usually find online, and show how ERP therapy can help. My aim isn’t to overwhelm you with jargon—it’s to sit down with you, like a friend, and talk through what this really feels like.

What Exactly Is Existential OCD?

Before diving into the signs, let’s clear up what we mean. OCD affects about 1.2% of adults in the UK, which is roughly 1.2 million people ( NICE, n.d.). While many think of hand-washing or checking locks, OCD can latch onto anything uncertain—including philosophical questions.

Existential OCD is when intrusive, unwanted thoughts revolve around life’s biggest mysteries: reality, death, identity, and meaning. Unlike healthy curiosity, these thoughts feel urgent, repetitive, and anxiety-inducing. You’re not exploring philosophy for fun—you’re chasing Certainty, desperately trying to silence doubt.

Why Talk About It?

Because so many people silently struggle with this. I’ve seen clients who thought they were “losing their mind” or believed nobody else could possibly think like this. And most websites give only surface-level lists of symptoms. Here, we’ll go deeper, blending clinical knowledge with real-world insight.

The 6 Signs of Existential OCD

So, what does existential OCD actually look like? Let’s break it down into six core signs.

1. Overwhelming Intrusive Questions about Life and Reality

First, there are the endless questions. Why am I here? What if I don’t exist? How can I know anything is real? These aren’t passing curiosities. They arrive suddenly, stick like glue, and won’t leave you alone.

Sometimes they even intrude during calm, happy moments—watching your child laugh, enjoying dinner with friends, or lying in bed before sleep. Instead of peace, your mind turns it into a puzzle you must solve. That’s the hallmark of an obsession: it feels stuck and unsolvable.

2. Fear of Death, Nothingness, and Losing Touch with Reality

Next comes fear. For many, it’s not just fear of dying but terror of nothingness itself. What happens after? What if there’s nothing at all? For others, it’s the horror of derealisation—the unsettling sense that the world feels dream-like—or depersonalisation, where you feel detached from yourself.

Studies have shown that people with OCD often score higher on measures of death anxiety than the general population (Menzies et al., 2022). With existential OCD, this fear becomes the backdrop of everyday life, fuelling dread and avoidance.

3. Compulsions to Find Certainty

Here’s the cycle. An intrusive question pops up. You panic. To calm down, you search for Certainty. You Google philosophy for hours. You ask friends for reassurance: “You think life has meaning, right?” You replay logical arguments in your head, trying to pin down an answer.

For a short moment, the anxiety dips. But soon, the doubt returns. So, you do it again. This is the compulsive loop—seeking Certainty where none can exist. In fact, research suggests reassurance-seeking is one of the most common compulsions in OCD, but with existential OCD, it’s wrapped in philosophy and science (Fukuda et al., 2023).

4. Intolerance of Uncertainty and Obsessive Rumination

If there’s one theme that ties OCD together, it’s this: difficulty tolerating uncertainty. For someone with existential OCD, the lack of concrete answers about life feels unbearable. Your brain insists there must be an answer, and until you find it, you can’t rest.

This leads to obsessive rumination. Hours disappear, replaying the same thought, the same argument, the same “what if.” It doesn’t bring peace—only exhaustion. People often tell me, “I feel like my mind is a hamster wheel that never stops.” That mental fatigue is a clear sign.

5. Avoidance, Emotional Distress, and Loss of Joy

After a while, people start avoiding triggers. You steer clear of films with existential themes, books about philosophy, and even conversations that feel too “deep.” It feels protective in the short term—but in reality, avoidance strengthens the cycle of fear.

Alongside avoidance comes emotional fallout: anxiety, depression, hopelessness, and a loss of joy in things you used to love. That walk through Holyrood Park or your favourite sitcom suddenly feels hollow. Existential OCD doesn’t just live in your thoughts—it seeps into your daily life.

6. Feeling Isolated and Disconnected from Others

Finally, many people with existential OCD feel deeply alone. You might believe no one else thinks this way. You might fear telling friends or partners, worried they’ll think you’re strange. That sense of alienation can intensify insomnia, numbness, or emotional withdrawal.

But here’s the truth: thousands of people across the UK are experiencing these same thoughts right now. It only feels isolating because OCD convinces you it’s unique.

What’s Going on Behind the Scenes?

Most websites stop at the signs. But let’s go a step further. Some newer psychological theories suggest existential OCD reflects a phenomenological imbalance—a disturbance in how we experience the self and the world. Imagine feeling unmoored, like your sense of reality doesn’t quite “click” into place. Your brain scrambles to restore balance by overthinking and checking. It’s not about weakness—it’s about how your system is wired (Fukuda et al., 2023).

How ERP Therapy Can Help

So, what do we do? The most effective treatment for OCD is Exposure and Response Prevention (ERP), a form of CBT. Instead of chasing Certainty, ERP helps you learn to sit with uncertainty.

For existential OCD, that might mean deliberately bringing up an intrusive thought—“What if life has no meaning?”—and resisting the urge to seek reassurance or ruminate. At first, the anxiety spikes. But over time, your brain learns you don’t need an answer to feel safe.

As a CBT therapist in Edinburgh, I’ve worked with many clients through ERP tailored specifically for existential themes. The process isn’t about solving the mystery of existence—it’s about regaining your life, relationships, and peace of mind.

FAQs about Existential OCD

Isn’t it normal to wonder about life and death?
Yes! Everyone does. The difference is intensity. With existential OCD, the thoughts are intrusive, repetitive, and distressing—stealing joy rather than adding curiosity.

How common is existential OCD?
There’s no official number, but if OCD affects around 1.2% of UK adults and even 5–10% of them experience existential themes, that could mean tens of thousands of people.

Can medication help?
Yes. SSRIs and other medications prescribed by a GP or psychiatrist can reduce OCD symptoms, but therapy—particularly ERP—is the gold standard.

Can I manage this on my own?
You can start by noticing compulsions—like reassurance-seeking or avoidance—and gently reducing them. But professional support often makes the process much smoother and safer.

Conclusion

So, those are six signs that you might be living with existential OCD. From intrusive questions and fear of death, to compulsions, rumination, avoidance, and isolation, it’s a cycle that can drain the colour from life. But remember, you’re not broken—you’re just caught in a pattern your brain has learned. And with the right support, especially ERP therapy, you can unlearn it.

If you see yourself in these signs, maybe it’s time to take the next step and talk with someone who understands. After all, wouldn’t it feel good to stop chasing answers and start living again?

References:
Fukuda, L., Tamelini, M., & Messas, G. (2023). Obsessive-compulsive existential type: A dialectical-phenomenological approach. Frontiers in Psychology, 14, 1211598. https://doi.org/10.3389/fpsyg.2023.1211598
Menzies, R. G., Sharpe, L., & Dar-Nimrod, I. (2022). Existential concerns in OCD with aggressive and sexual obsessions. Journal of Obsessive-Compulsive and Related Disorders, 35, 100746. https://doi.org/10.1016/j.jocrd.2022.100746
NICE. (n.d.). Obsessive–compulsive disorder: Scope. National Institute for Health and Care Excellence. Retrieved from https://www.nice.org.uk/guidance/cg31