More About Compulsions

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The link between obsessions & compulsions might not be obvious

Sometimes the obsessive and compulsive themes are easily linked. For instance, someone might wash their hands to prevent contamination, or check the door to prevent a break-in. The connection is intuitive — you can see why one leads to the other.

However, this is not always the case with OCD. The links can be far less obvious. Someone may perform a washing ritual to feel more "pure" after having an unwanted sexual obsession, or count to a "safe" number to prevent harm coming to loved ones. There's no logical mechanism connecting the washing to the thought, or the number to the safety of someone else — the connection exists only within OCD's internal logic, not in reality.

This is worth knowing because it means a compulsion doesn't have to make sense to someone else — or even to you — for it to be a compulsion. If a behaviour is aimed at relieving the distress of an obsession or preventing a feared outcome, the logic of how rarely matters to OCD.

What makes something a compulsion?

Here's something surprisingly few OCD resources spell out clearly: a behaviour isn't a compulsion because of what it is. It's a compulsion because of why you're doing it.

The same action can be completely reasonable in one context and a compulsion in another:

Checking your baby's breathing once before bed — that's ordinary parenting. Checking it twenty times because OCD says "what if" — that's a compulsion.

Googling a medication's side effects once — that's reasonable. Googling for two hours because certainty never quite arrives — that's a compulsion.

The behaviour looks identical from the outside. What separates them is the function: is this settling a genuine, answerable question, or is it an attempt to reach a certainty that OCD will never actually let you have?

The four functions of compulsions

Almost every compulsion — mental or physical, big or small — exists to do one of four things:

• Reduce anxiety — to bring down the immediate distress of the obsession

• Increase certainty — to try to know rather than tolerate not-knowing

• Prevent harm — to stop something bad from happening, or feel responsible for having tried

• Feel "just right" — to resolve a sense of incompleteness or wrongness, even when nothing is objectively wrong

Most compulsions fit more than one of these at once. Recognising which function a behaviour is serving is often more useful than trying to label the behaviour itself.

Anything can become a compulsion

Any behaviour can become a compulsion — even blinking, breathing, or saying goodbye to others when you leave the house. These acts are a normal part of survival and everyday life, which means it is not the behaviour itself that is the problem, but the intention behind it.

The same is true of more deliberate, ordinarily healthy behaviours:

• Washing hands

• Researching before a decision

• Asking a doctor a question

• Praying

• Apologising

• Exercising

• Eating healthily

• Locking doors

• Checking on a baby

• Taking medication correctly

None of these behaviours are the problem, and none of them need to stop. What determines whether something is a compulsion is whether it's being done with the purposeful aim of reducing distress or preventing something feared — driven by urgency, repeated past the point of usefulness, and aimed at a certainty that never quite arrives. The same breath, the same glance at a lock, the same "I love you" said on the way out the door, can be either an ordinary part of life or a compulsion, depending entirely on what's driving it.

Mental compulsions

Because mental compulsions are invisible, they're also the most commonly missed — by the people experiencing them and, often, by the people around them. This is one of the most important sections on this page.

Mental reviewing

Going back over an event, conversation, or decision in detail, searching for anything that might have been missed or gone wrong.

Mental checking

Scanning internally — checking how you feel, whether a thought is still there, whether you still "believe" something — the mental equivalent of checking a lock.

Rumination

Circling the same question or scenario again and again, usually starting with "why" or "what if," without ever landing anywhere.

Self-reassurance

Telling yourself internally that everything is fine, that you didn't mean it, that it won't happen — essentially seeking reassurance from yourself instead of someone else.

Thought replacement

Trying to swap an unwanted thought for a "better" one, or force a neutral thought to cancel it out.

Counting

Counting steps, breaths, words, or repetitions, often to reach a number that feels "right" or "safe."

Praying

Prayer used compulsively, to neutralise a thought or seek certainty, rather than as an act of faith. This is common and doesn't reflect on someone's actual spirituality.

Neutralising

Doing or thinking something specifically to "cancel out" or undo an unwanted thought.

"Testing" yourself

Deliberately provoking a thought or exposing yourself to a trigger to see how you react — an attempt to prove something to yourself, one way or the other.

Monitoring thoughts, feelings, and bodily sensations

Continuously checking in on your internal state — is the thought still there? Do I still feel anxious? Does my body feel different? — treating your own mind and body as something to be watched.

Someone doing any of the above isn't doing "a milder version" of OCD. They're doing OCD — it simply happens where no one else can see it.

Compulsions don't always feel voluntary

As mentioned above, compulsions are intentional acts — but they rarely feel that way. People often describe them with some version of: "I don't even realise I'm doing it."

That's genuinely common, and it doesn't mean something is wrong with your awareness. Like the mozzie bite we described on the Obsessions page, compulsions can become so automatic that you notice you're halfway through one before you register you started. The itch gets scratched before the decision to scratch fully registers.

That automaticity is part of why compulsions are so hard to simply "stop trying" — by the time you notice, the behaviour is already underway.

The relief trap

This is the engine that keeps the whole cycle running, and it's worth sitting with:

• An intrusive thought arrives

• A compulsion is performed

• Relief follows

• The brain logs this as: "That worked. Do that again next time."

• The next obsession arrives even louder, because the brain now believes this kind of thought needs a response

This is reinforcement, plain and simple. The relief a compulsion provides isn't a flaw in the system — it's exactly what teaches your brain that the original thought was worth reacting to in the first place. Every time a compulsion works, it makes the next obsession slightly more convincing.

(This cycle is a strong candidate for a simple looping diagram — happy to put one together if useful.)

Common compulsions by OCD theme

Compulsions often cluster around specific themes. Recognising your own pattern here can be one of the fastest ways to realise what you've been dealing with.

Harm OCD

• Checking or avoiding knives

• Avoiding holding or being near babies

• Seeking reassurance that you wouldn't hurt someone

• Reviewing memories for evidence you didn't act on a thought

Health OCD

• Googling symptoms

• Checking or scanning the body repeatedly

• Repeated doctor visits

• Monitoring bodily sensations for signs something is wrong

Relationship OCD (ROCD)

• Checking your level of attraction

• Comparing your relationship to others

• "Testing" your feelings toward your partner

• Reviewing conversations for signs of doubt

Contamination OCD

• Washing or cleaning beyond what's needed

• Avoiding certain objects, people, or places

• Sterilising items repeatedly

POCD (unwanted sexual intrusive thoughts)

• Avoiding children or certain situations

• Checking for signs of arousal

• Reviewing interactions for "proof" of intent

• Seeking reassurance about character or intentions

If you recognise yourself in more than one of these, that's common — OCD themes frequently overlap or shift over time.

When compulsions disguise themselves as virtues

One reason compulsions are so hard to spot in yourself is that OCD rarely presents them as compulsions. It presents them as good qualities. People rarely say "I'm doing a ritual." They say:

• "I'm just being responsible."

• "I'm being prepared."

• "I'm being thorough."

• "I'm being moral."

• "I'm being honest."

• "I'm being safe."

• "I'm being caring."

These are all admirable qualities — which is exactly why OCD borrows them. It's much harder to question a behaviour when it's wearing the costume of your values. This is the same ego-dystonic pattern we describe on the Obsessions page: OCD doesn't attack the things you don't care about. It recruits the things you care about most, including how you see yourself as a person.

People with OCD usually know the behaviour doesn't make sense

This is one of the defining, and most painful, features of OCD compulsions. Most people with OCD understand — often clearly — that their behaviour is either unrealistic (repeating a "good" thought to prevent a loved one becoming ill) or excessive (checking a stove thirty times).

This creates a particular kind of overwhelm. On one hand, part of you knows the behaviour isn't rational and isn't actually helping. On the other hand, you can't be fully certain, and the pull to do it anyway remains just as strong. That combination — insight without control — is often what drives the shame and self-doubt so many people with OCD carry, and why compulsions can persist for years even in people who are, in every other respect, clear-thinking and insightful about their own mind.

Why compulsions grow

Compulsions rarely stay the same size. One reassurance-seeking question becomes two. Then five. Then twenty, asked of multiple people, multiple times a day.

This happens because relief from a compulsion is only ever temporary — and each time it works, the brain requires a little more to reach the same sense of resolution next time. What used to settle a doubt in one round of checking no longer feels like enough. The goalposts of "enough certainty" keep moving, because certainty was never actually the finish line OCD had in mind.

Why doesn't reassurance work?

This deserves its own explanation, because it's one of the most common and most misunderstood patterns in OCD:

• Reassurance is given or sought

• Relief follows — briefly

• Doubt returns

• Reassurance is needed again

• The brain learns that reassurance is what makes the doubt go away

Each round strengthens the belief that reassurance is necessary, without ever addressing the actual problem — which was never a lack of information. It was the belief that certainty is required at all. This is why reassurance can feel essential in the moment and still make things worse over time.

Compulsions can feel like solving

One of the most convincing disguises a compulsion can wear is "thinking it through." People rarely feel like they're performing a ritual when they're stuck in their head. They feel like they're being careful, or responsible, or simply trying to work something out.

Here's a useful distinction: if your thinking is driven by urgency, keeps repeating without ever arriving at an answer that actually satisfies you, and leaves you needing to think about it even more — that's probably not problem-solving. It's a compulsion wearing the shape of one.

Genuine problem-solving tends to end. OCD-driven analysis rarely does.

What happens if I don't do the compulsion?

This is usually the question underneath everything else — and it's also where treatment begins.

In the short term: distress goes up. That part is real, and it's not a sign that something has gone wrong.

Over time, with repeated practice: the brain learns that the catastrophe it was braced for doesn't happen — not because the compulsion was skipped once, but because the thought was allowed to be there without being fed. Distress that isn't reinforced gradually settles on its own. Confidence grows, not because the doubt was resolved, but because you learn you can tolerate not resolving it.

This is the foundation of Exposure and Response Prevention (ERP), which we cover in detail on our CBT for OCD page.

Compulsions aren't the problem — they're the solution OCD teaches you

Compulsions exist for an understandable reason: they work. At least in the short term.

They reduce anxiety. They create relief. They make you feel safer, more responsible, more in control. That's precisely why people keep doing them — not out of weakness, but because the compulsion genuinely delivers on its promise, briefly, every single time.

The difficulty is that every time a compulsion works, the brain learns the obsession must have been worth responding to. So the next one arrives louder, more urgent, harder to ignore. The compulsion isn't failing to help. It's succeeding — and that success is exactly what keeps the cycle turning.

Understanding this isn't about blaming yourself for the compulsions you've relied on. It's about understanding why they've kept coming back, so the cycle can finally be interrupted.

What about other compulsive behaviours?

The compulsions of OCD typically bring a sense of relief, but not pleasure. This is an important distinguishing feature. The compulsive behaviours seen in substance use and some sexual disorders involve genuine pleasure — the acts are resisted mainly because of their harmful consequences, not because they feel unwanted in the moment.

OCD compulsions work differently. They're rarely, if ever, enjoyable. They're performed to escape distress, not to seek reward.

Tic disorders are a different comparison again. The compulsive-looking movements involved in tics are often performed involuntarily, and are not typically designed to reduce the impact of a specific obsession the way an OCD compulsion is.

Frequently Asked Questions

Can thinking be a compulsion?

Yes. If it's driven by urgency, repeats without resolution, and is aimed at reaching certainty rather than genuinely solving something, mental analysis can function exactly like any other compulsion.

Can Googling be a compulsion?

Yes, when it's repeated searching aimed at eliminating doubt rather than answering a specific, answerable question. The giveaway is usually that one search was never going to be enough.

Can praying be OCD?

Yes, when prayer is used to neutralise a thought or achieve certainty rather than as an act of faith. This says nothing about a person's actual beliefs or spirituality — it's about the function the prayer is serving in that moment.

Can confessing be OCD?

Yes. Repeatedly confessing thoughts, "sins," or perceived wrongdoings to seek relief or reassurance is a common compulsion, particularly in moral and religious themes of OCD.

Can avoiding be a compulsion?

Yes. Avoidance is one of the most common compulsions of all — steering clear of a person, place, object, or situation specifically to prevent an obsession from being triggered.

Can reassurance make OCD worse?

Yes, over time. Reassurance provides brief relief but teaches the brain that the doubt required outside confirmation to be resolved, which tends to increase how often reassurance is needed.

How do I know if it's OCD or just being careful?

The clearest signal isn't the behaviour — it's whether it ends. Being careful usually resolves once a reasonable question is answered. OCD-driven behaviour tends to repeat, escalate, and leave you needing to do it again.

Can compulsions become habits?

Yes. Compulsions can become so automatic that they happen with very little conscious awareness, which is part of what makes them hard to catch in the moment.

Why do compulsions work only briefly?

Because they never address the actual issue, which isn't a lack of certainty — it's the belief that certainty is required at all. Relief fades and the doubt returns, because the doubt was never really about the specific thing being checked.

Looks like... vs. might actually be...

Looks likeMight actually be

Being carefulChecking compulsion

Doing researchReassurance seeking

Thinking it throughRumination

Double-checkingCompulsive checking

Asking someoneReassurance

Avoiding stressAvoidance compulsion

Being responsibleResponsibility compulsion

If several of these feel familiar, that doesn't mean every careful decision you've ever made was a compulsion — it means it may be worth paying attention to why the behaviour is happening, not just what it looks like from the outside.

Where to from here

The Obsessions page explains why the mind gets hooked on certain thoughts. This page explains why the cycle continues once it starts. Together, they describe the full loop of OCD — and understanding that loop is the first step toward interrupting it.

Learn more about CBT and ERP for OCD →

Notes for your team (not page copy)

• Your existing copy is woven in at three points: the opening definition, "The link between obsessions & compulsions might not be obvious," and "What about other compulsive behaviours?" — the last one is deliberately placed right before the FAQ, mirroring where "What about other types of obsessions?" sits on the live Obsessions page, for structural consistency between the two pages.

• "Anything can become a compulsion" now merges your original examples (blinking, breathing, saying goodbye) with the healthy-behaviour list from the brief (washing, researching, praying, etc.) into one section rather than two, so the "it's the function, not the behaviour" point is only made once at full strength instead of twice.

• The new "People with OCD usually know the behaviour doesn't make sense" section is placed right after "disguised as virtues" — the contrast between OCD dressing compulsions up as virtues, and the person still knowing at some level it's excessive, creates a natural pivot point.

• The Relief Trap and Why Doesn't Reassurance Work sections remain the strongest candidates for a diagram.

• The theme table and FAQ block are still your best schema-markup candidates, as noted previously.