OCDIntrusive Thoughts

What are intrusive thoughts? A therapist explains

Intrusive thoughts are unwanted, uninvited, and more common than you might think. Therapist Amalia Sirica breaks down why they happen, and what you can do about them.

AAmalia Sirica LCSWMarch 5, 2026 · 8 min read

Obsessive Compulsive Disorder (OCD)

What are intrusive thoughts? A therapist explains

Start reading

Comment count

0 comments

Publish date

March 5, 2026

Author

Laura Eynard

What are intrusive thoughts, and why can’t I make them stop?

The word “intrusive” actually tells you everything.

Let’s start with the word itself. Intrusive literally means something that is unwanted or uninvited. It’s the thought that pops in and makes us go, “AH!” – the one that seems to come out of nowhere, that we were not looking for, and did not ask for.

That’s it. That’s an intrusive thought.

And here’s the thing that might surprise you: most of us have them.

Why do people have intrusive thoughts?

To be honest? I think that most of us have intrusive thoughts.

A really common example: “What if I fell onto the train tracks right now?” or “What would I do if the plane were to crash?”

The difference is that some people have a thought like that and think, “that was weird,” and then they move on. They don’t then Google it for three hours.

Whereas someone dealing with Obsessive Compulsive Disorder (OCD), or someone in a high-anxiety state, might be extremely distressed by the exact same thought. They might feel they need to get rid of it, counteract it, explain it, or neutralize it somehow.

And that’s where the loop begins.

Why do they feel so real and so distressing?

Intrusive thoughts are real in a sense because we are actually thinking the thought.

But it’s the meaning we assign to them that makes them distressing, and makes them feel more real than they are.

The thought itself is just a thought. And the distress comes when we give the thought meaning.

For example: “Having this thought must mean that I am a bad person.”

You’ve just assigned an analysis to the thought. You’ve turned a momentary mental blip into a verdict about your character. And now you’re not just dealing with a weird thought, you’re dealing with a belief about who you are.

That is where the real suffering lives, in the story that is built around the thought.

The biggest misunderstanding about intrusive thoughts:

People think that they can shake their heads like an Etch-A-Sketch toy, and the thoughts will disappear.

They think that they can:

Reassure the thoughts away
Logic them away
Research them away
Soothe them away
Or, let’s be honest, drink or smoke them away

None of it works in the long run.

The only true way to deal with intrusive thoughts is to not deal with them. Which sounds almost too simple, but is actually one of the hardest things a person can do when they’re in an active trigger moment. Because every instinct screams at you to do something.

What Does the OCD Loop Actually Look Like?

There are many subtypes of OCD

moral scrupulosity,
contamination,
relationship OCD,
harm OCD,
somatic OCD

But regardless of where your thoughts focus, the loop is usually the same:

Trigger → Obsession → Compulsion → Temporary relief → Back to the beginning

The compulsion is an attempt to escape fear. But what it actually does is to feed it. Every time you perform the compulsion, you send your brain a signal: this threat was real enough to respond to. And the brain takes note.

Think of it like getting used to cold water. If you just stay in, you habituate to the temperature. The cold becomes manageable. But if you keep jumping out and getting back in, you never adapt. The cold stays present, or in this case, the fear.

So what actually helps?

The gold standard treatment for intrusive thoughts and OCD is ERP, which stands for, Exposure and Response Prevention. You learn to sit with the trigger (exposure) without feeding the compulsion (response prevention). Over time, the thought loses its intensity.

This is not easy work. But it is incredibly effective, and it is possible.

Everything may or may not be okay with OCD therapy

You don’t have to white-knuckle this alone.

If you recognize yourself in any of this, if you’re exhausted from fighting thoughts that keep coming back no matter what you try, take a deep breath with me. You’re human, you’re in the right place, and you’re dealing with something that has a name, and a path through it.

I am so glad that you are here!

→ Book a free 30-minute discovery call

Amalia Sirica, LCSW, is a licensed therapist with 10+ years of experience working with OCD, anxiety, trauma, and neurodivergent clients. She believes that healing should feel human, never clinical and cold.

In this post

Why do we have intrusive thoughts?
Why do they feel so real?
The biggest misunderstanding
The OCD loop
What actually helps

“You don’t have to figure this out alone.”

Book a free consult →

Why do people have intrusive thoughts?

Our brains are constantly generating possibilities. Part of that function involves noticing potential dangers — running worst-case scenarios, flagging things that could go wrong. Most of the time, we register those thoughts and move on. You wonder briefly what would happen if you dropped your phone off a balcony, then you go back to your conversation. That’s normal.

The trouble starts when a thought feels like it means something. When “what if I said something hurtful?” turns into evidence that you’re a bad person. When a random image of harm becomes a verdict on your character. That’s when the brain starts treating the thought like a threat — and the OCD loop kicks in.

Why do they feel so real and so distressing?

The thought itself isn’t the problem. The distress comes from the meaning we attach to it.

When someone assigns significance to an intrusive thought — “this thought reveals who I really am,” or “having this thought makes me dangerous” — a momentary mental event becomes a character judgment. And suddenly there’s suffering not from the thought itself, but from the story being built around it.

“A thought is not a fact. And it’s certainly not a confession.”

The mind doesn’t distinguish clearly between imagining something and doing it — evolutionarily, treating imagined threats as real ones kept us alive. In modern life, the same mechanism can make an intrusive thought feel almost like a memory of something that happened, or evidence of something you secretly want. It isn’t.

The biggest misunderstanding about intrusive thoughts

People assume they can think their way out of intrusive thoughts. They seek reassurance from others. They research the topic obsessively. They try to prove to themselves that the thought is irrational. They do breathing exercises. They try to replace the thought with a “positive” one.

All of these strategies have one thing in common: they treat the thought as a problem that needs to be solved. And that’s exactly what strengthens it.

The counterintuitive truth is that trying to suppress or manage intrusive thoughts makes them louder. Tell yourself not to think of a white bear, and white bear is suddenly all you can think about. The harder you push against a thought, the more your brain flags it as important — and keeps sending it back.

What does the OCD loop actually look like?

Whether you’re dealing with classic OCD or a different anxiety pattern, the loop tends to follow the same structure:

The OCD Loop

01Trigger

→

02Obsession

→

03Compulsion

→

04Temporary Relief

… and back to the beginning.

The compulsion can be anything: checking, seeking reassurance, researching, praying, mentally reviewing events, avoiding triggering situations. In the short term it works — the anxiety dips. In the long term, every compulsion teaches your brain that the trigger was genuinely dangerous, and the loop tightens.

It’s a bit like being afraid of cold water. Jumping in briefly — then jumping out — reinforces the fear. The only way to stop being afraid of cold water is to get in, stay there, and let your nervous system learn that you can tolerate it.

So what actually helps?

ERP — Exposure and Response Prevention — is the evidence-based treatment with the strongest track record for OCD and intrusive thoughts. In ERP, you work with a therapist to gradually expose yourself to triggers without performing the compulsion. Over time, the brain stops treating the trigger as a threat. The thoughts may still come — but they lose their charge.

ERP isn’t about being brave or “just pushing through.” It’s careful, graduated, and done with support. The goal isn’t to feel nothing. It’s to feel the discomfort and discover that you can survive it — without doing anything to make it stop.

A note from Amalia

If intrusive thoughts are affecting your daily life — your relationships, your work, your ability to feel like yourself — you don’t have to figure this out alone. ERP is most effective when it’s guided. Reach out if you’d like to talk about whether therapy might help.

Amalia SiricaLCSW · Licensed Clinical Social Worker

Amalia specializes in OCD, anxiety, trauma, and neurodivergence. With 10+ years of clinical experience, she uses evidence-based approaches — including ERP and ACT — to help people stop fighting their minds and start living their lives.

Work with Amalia →

No Results Found

The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.

0 Comments