Compulsions: Definition, Causes and Possible Symptoms

A patient came into my office last month—we’ll call her Sarah—and she was exhausted. Not just tired. Exhausted in that bone-deep way that comes from fighting yourself constantly. She told me she’d spent three hours that morning checking the stove. Not because it was actually on. She knew it wasn’t on. She’d checked it twenty minutes earlier. And twenty minutes before that. And before that. But the thought—what if the house burns down, what if I kill my family—wouldn’t leave her alone until she checked. Again. And again. And again.

“I know it’s crazy,” she said, and I stopped her right there. Because here’s the thing about compulsions—they’re not crazy, and the people experiencing them aren’t irrational. They’re trapped in a cycle that feels impossible to break, driven by anxiety so intense that performing these repetitive behaviors feels like the only way to breathe. Understanding compulsions means understanding that gap between knowing something logically and feeling it emotionally. Sarah knew the stove was off. Logically, completely, she knew. But the anxiety didn’t care about logic.

Compulsions show up in lots of ways, and honestly? Most people have experienced mild versions without realizing it. Ever double-checked that you locked your car? Gone back to make sure you turned off the lights? Felt uncomfortable when things aren’t arranged just so? Those are compulsive-like behaviors, though they’re not necessarily compulsions in the clinical sense. The difference between a quirk and a compulsion comes down to control, distress, and impact on your life. When you can’t stop, when the behavior takes over, when it interferes with work or relationships or just… living—that’s when we’re talking about actual compulsions. And they’re way more common than you’d think. They’re a hallmark of obsessive-compulsive disorder, sure, but they also appear in other conditions and sometimes on their own.

I’ve worked with people who wash their hands until they bleed. People who count everything—steps, words, ceiling tiles—because not counting feels dangerous somehow. People who hoard items they don’t need because throwing them away creates unbearable anxiety. People whose mental compulsions are invisible to everyone around them but consume hours of their day in repetitive thoughts and mental rituals. Compulsions wear a thousand different faces, but they share common roots in anxiety, uncertainty, and the desperate need to feel safe or certain in an uncertain world. This article is going to dig into what compulsions actually are, where they come from, what they look like, and—most importantly—what you can do if you’re stuck in that exhausting cycle. Because there’s hope here. Real, evidence-based, I’ve-seen-it-work-hundreds-of-times hope. But first, we need to understand what we’re dealing with.

What Compulsions Actually Are (Beyond the Stereotypes)

So let’s start with a proper definition. Compulsions are repetitive behaviors or mental acts that someone feels driven to perform in response to an obsession or according to rigid rules. They’re aimed at reducing distress or preventing some dreaded event or situation. But here’s the key part that people miss—the behaviors aren’t connected in a realistic way to what they’re supposed to prevent, or they’re clearly excessive.

What does that mean in practice? If you wash your hands after using the bathroom, that’s normal hygiene, not a compulsion. If you wash your hands fifty times a day until they’re raw and bleeding because you’re terrified of contamination even though you haven’t touched anything, that’s a compulsion. If you check that your door is locked before bed, that’s prudent. If you check it forty times and still can’t feel certain it’s locked, that’s a compulsion.

The word “compulsion” itself is telling—it comes from the Latin “compellere,” meaning to drive or force. People with compulsions feel forced to perform these behaviors. It’s not a choice in any meaningful sense. Sure, technically they could stop. But the anxiety that floods in when they try? Unbearable. Absolutely unbearable. So they perform the compulsion, get temporary relief, and the whole cycle starts again.

Here’s what confuses people: compulsions can be physical behaviors you can see—washing, checking, organizing, counting. But they can also be entirely mental—repeating words or phrases silently, mentally reviewing events, counting in your head, trying to “neutralize” bad thoughts with good thoughts. Those mental compulsions are just as real and just as distressing as visible ones, but they’re invisible to everyone around you. Which can be incredibly isolating, honestly.

Most people with compulsions know they’re excessive or unreasonable. That’s important to understand. They’re not delusional—they recognize the behavior doesn’t make logical sense. But knowing that doesn’t help. The anxiety is too powerful. The uncertainty is too uncomfortable. The compulsion provides relief, even if it’s temporary and even if performing it takes hours out of every day.

The Anxiety-Compulsion Cycle That Keeps People Trapped

To really get compulsions, you need to understand the cycle they’re part of. It goes something like this: First, you have an intrusive thought or obsession. Could be anything—did I lock the door, are my hands contaminated, what if I hurt someone, what if something terrible happens. That thought triggers intense anxiety or distress. The discomfort builds and builds until you feel like you’ll explode if you don’t do something.

So you perform the compulsion. Check the door. Wash your hands. Count to a certain number. Mentally review the situation. And instantly—relief. The anxiety drops. You feel better. Problem solved, right? Wrong. Because that relief teaches your brain that the compulsion works, which makes it more likely you’ll do it again next time. And there will be a next time. There’s always a next time.

The obsessive thought comes back—minutes, hours, days later. Anxiety spikes again. You perform the compulsion again. Relief again. The cycle repeats, over and over, and each repetition strengthens the pattern. What started as checking the stove once becomes checking it five times, then ten, then twenty. The compulsion that once took thirty seconds now takes thirty minutes or three hours.

This is operant conditioning at work, if you want the psychology term. The compulsion is negatively reinforced—it removes something unpleasant (the anxiety), which makes you more likely to repeat it. Your brain is basically learning the wrong lesson: that the compulsion is necessary for safety or certainty. Breaking this cycle requires doing the opposite of what feels natural—facing the anxiety without performing the compulsion, which sounds simple and feels impossibly hard.

People outside this cycle don’t get it. They say things like “just stop” or “you know it doesn’t make sense, so why do you keep doing it?” And if you’re stuck in compulsions, those comments hurt. Because of course you’ve tried to stop. Of course you know it doesn’t make sense. But the anxiety is real, the distress is real, and the compulsion is the only thing that makes it bearable—at least in the moment.

Common Types You Might Recognize

Compulsions come in endless variations, but certain patterns show up repeatedly. Let me walk you through the most common ones I see in practice, keeping in mind that everyone’s experience is personal and unique.

Cleaning and washing compulsions are probably what most people picture when they think of compulsions. Hand washing until skin cracks and bleeds. Showering for hours. Cleaning surfaces obsessively. These usually stem from contamination fears—germs, disease, dirt, bodily fluids, chemicals. The person knows intellectually that they’re not actually contaminated, but the feeling of being dirty or unsafe won’t go away until they wash. I’ve worked with patients who go through bottles of soap daily, whose hands are perpetually raw, who can’t touch doorknobs or shake hands or hug their own children without intense distress.

Checking compulsions are equally common. Checking locks, appliances, light switches, car doors. Checking that you didn’t hit someone while driving. Checking that you didn’t make a mistake at work. Checking that you didn’t say something offensive. The checking can be physical—going back to look at the stove twenty times—or mental—mentally reviewing conversations to make sure you didn’t say anything wrong. These compulsions often connect to fears of being responsible for harm or disaster.

Ordering and arranging involves needing things to be symmetrical, in a specific order, “just right.” Books arranged by height. Clothes organized by color. Objects positioned at exact angles. Disturbing the arrangement creates intense discomfort that won’t resolve until everything’s back in place. Sometimes this connects to magical thinking—if things aren’t arranged correctly, something bad will happen. Other times it’s just this overwhelming sense that things feel wrong otherwise.

Counting compulsions show up in various forms. Counting steps while walking. Counting words in sentences. Performing actions a specific number of times—turning a light switch on and off exactly eight times, for example. The number often has personal significance, or certain numbers feel “safe” while others feel “dangerous.” Stopping at the wrong number creates anxiety that demands starting over.

Repeating can involve repeating words, phrases, prayers, or actions until they feel “right.” Reading and rereading the same paragraph. Rewriting sentences over and over. Going in and out of doorways multiple times. The repetition continues until the person achieves a certain feeling—sometimes described as a sense of completeness or rightness that’s hard to articulate but unmistakable when it happens.

Mental compulsions are invisible but just as time-consuming and distressing. Mentally reviewing events to make sure nothing bad happened. Repeating phrases silently. Counting in your head. Trying to replace “bad” thoughts with “good” thoughts. Praying compulsively. These can consume hours while looking to outsiders like you’re just sitting there thinking.

Reassurance-seeking is a compulsion that involves other people. Asking repeatedly if everything’s okay, if you did the right thing, if the person is mad at you, if something terrible happened. The reassurance provides temporary relief, but the doubt comes back quickly, driving more reassurance-seeking. This can strain relationships significantly when loved ones are pulled into the compulsive cycle.

What Actually Causes Compulsions to Develop

Alright, so where do compulsions come from? Why do some people develop them while others don’t? The honest answer is: we don’t completely know. But we’ve got some pretty solid ideas based on research and clinical observation.

Brain chemistry plays a role, particularly serotonin. Studies show that people with OCD and significant compulsions often have differences in how their brains use serotonin, a neurotransmitter involved in mood, anxiety, and behavior regulation. SSRIs—medications that increase serotonin availability—help many people with compulsions, which supports this theory. But it’s not the whole story. Plenty of people with low serotonin don’t have compulsions, and not everyone with compulsions responds to SSRIs.

Brain structure and function differences also appear in imaging studies. Certain brain regions—particularly the orbitofrontal cortex, anterior cingulate cortex, and basal ganglia—show altered activity in people with OCD and compulsions. These areas are involved in error detection, decision-making, and habit formation. When they’re not working quite right, you get this sense that something’s wrong or incomplete, driving the compulsive behaviors. It’s like your brain’s error detection system is overactive, constantly signaling danger or incorrectness even when everything’s fine.

Genetics contributes too. Compulsions and OCD run in families. If you have a first-degree relative with OCD, you’re at higher risk. Twin studies suggest genetic factors account for maybe 45-65% of the risk for developing OCD. But genes aren’t destiny—they create vulnerability that environmental factors can trigger.

Speaking of environmental factors, stressful or traumatic events often precede the development of compulsions. Major life changes, losses, trauma, illness—these can trigger the onset or worsening of compulsive symptoms in vulnerable individuals. I’ve seen compulsions emerge after childbirth, during divorces, following deaths of loved ones, after medical diagnoses. The stress seems to activate an underlying predisposition.

Learning and conditioning are huge pieces. Remember that anxiety-compulsion cycle I mentioned? That’s learned behavior, essentially. You perform a compulsion, anxiety decreases, your brain learns that the compulsion “works,” so you’re more likely to do it again. Over time, this creates deeply ingrained patterns that feel automatic and necessary.

Cognitive factors matter too. People who develop compulsions often have certain thinking patterns: inflated sense of responsibility (if I don’t check, I’ll be responsible for disaster), intolerance of uncertainty (I can’t stand not knowing for sure), overestimation of threat (germs are everywhere and will definitely make me sick), magical thinking (if I don’t do this ritual, something bad will happen). These thought patterns create the fertile ground where compulsions take root.

How to Recognize When It’s More Than Just a Quirk

Everyone has little habits or preferences. So how do you know when you’ve crossed from “I like things organized” to “I have compulsions that need attention”? Here are the markers I look for in practice.

Time consumption is a big one. If behaviors are taking more than an hour per day, interfering with work, school, or social activities, that’s significant. I’ve worked with patients whose compulsions consume six, eight, ten hours daily. They’re late to work because they can’t leave the house until they’ve completed their checking routine. They avoid social situations because they can’t access compulsions in public. Their entire life organizes around managing these behaviors.

Distress matters too. If the thoughts and behaviors cause significant anxiety, shame, or emotional pain, that’s a problem regardless of time spent. Some people perform compulsions relatively quickly but feel intense distress about having to do them. The shame of knowing it’s “irrational” but being unable to stop can be crushing.

Interference with functioning is key. Are the compulsions preventing you from doing things you need or want to do? Avoiding situations that trigger compulsions, like not having people over because they’ll mess up your organizational system? Unable to hold a job because you can’t complete tasks without excessive checking? Relationships suffering because you’re constantly seeking reassurance or can’t tolerate normal messiness?

Lack of control is another marker. When you try to resist the compulsion, can you? Or does the anxiety become so overwhelming that you give in? Most people with clinically significant compulsions feel they can’t resist without extreme distress. They’ve tried—of course they’ve tried—but the discomfort is unbearable.

The “just right” feeling deserves mention. Many compulsions continue until the person achieves a certain internal sense that’s hard to describe—a feeling of rightness or completeness. If that feeling doesn’t come, they start over. This can lead to repeating behaviors endlessly, searching for that elusive sense of satisfaction that might take minutes or hours to achieve.

Compulsions Beyond OCD

Most discussions of compulsions focus on OCD, which makes sense—it’s the primary condition where compulsions are a defining feature. But compulsive behaviors show up in other contexts too, and it’s worth understanding the landscape.

Body-focused repetitive behaviors include things like hair-pulling (trichotillomania), skin-picking (excoriation disorder), and nail-biting. These are considered related to OCD but distinct. The behaviors are compulsive in that they’re hard to resist and cause distress, but they’re not usually in response to obsessive thoughts. They’re more about tension relief, sensory satisfaction, or habit.

Hoarding disorder involves compulsive acquisition and inability to discard items, leading to cluttered living spaces that impair functioning. The compulsion here is saving things, acquiring things, and avoiding the distress of discarding anything. It’s related to OCD but has some distinct features, particularly the positive feelings people with hoarding disorder often have about their possessions.

Eating disorders sometimes involve compulsive elements—compulsive exercise, ritualistic eating patterns, repetitive behaviors around food and body checking. These aren’t quite the same as OCD compulsions but share that driven, hard-to-resist quality.

Substance use can become compulsive, though we typically call that addiction rather than compulsion. Still, the underlying mechanism—performing a behavior to relieve distress despite negative consequences—has similarities.

Autism spectrum disorder sometimes includes repetitive behaviors that can look compulsive. But the function is often different—stimming or repetitive actions in autism serve regulatory purposes and aren’t typically driven by anxiety about obsessive thoughts the way OCD compulsions are.

Living With Compulsions Daily

Let me paint a picture of what living with significant compulsions actually looks like, because I think people who haven’t experienced it don’t quite grasp the reality.

Your alarm goes off. You need to get ready for work. But first, you need to check that all the windows are locked. You checked last night before bed, but you need to check again. So you go through the house—living room window, kitchen window, bathroom window, bedroom windows. Each one. You check them all. But did you really check them, or were you just going through the motions? The uncertainty gnaws at you, so you do another round. And another. Forty minutes have passed. You’re going to be late.

You rush through your shower, but the soap doesn’t feel like it’s washing away properly. Are you really clean? You wash again. And again. Your skin’s getting red and irritated, but you can’t stop until it feels right. Another twenty minutes gone. You’re definitely going to be late now.

Getting dressed takes longer than it should because the clothes need to go on in a specific order, and if you mess up the order, you have to start over. You finally make it out the door, but three blocks from home, the thought hits: did I turn off the coffee maker? You’re pretty sure you did. But pretty sure isn’t certain. The image of your house burning down flashes through your mind. The anxiety spikes. You turn around, go back, check the coffee maker. It’s off. Of course it’s off. You knew it was off. But now you’re twenty minutes late.

That’s one morning. One typical morning for someone with moderate to severe compulsions. Multiply that by every day, every situation, every trigger. The exhaustion isn’t just physical—it’s mental and emotional. The shame of knowing this is “irrational” but being unable to stop. The isolation of avoiding situations that trigger compulsions or hiding the behaviors from others. The strain on relationships when partners or family members don’t understand why you can’t “just stop.”

Treatment That Actually Works

Here’s the good news: compulsions are highly treatable. Not always easy to treat, but treatable. The gold standard is a specific type of cognitive-behavioral therapy called exposure and response prevention, or ERP.

ERP works by breaking that anxiety-compulsion cycle. You expose yourself to the situation that triggers the obsession and anxiety, but you prevent yourself from performing the compulsion. Sounds simple. Feels terrifying. But it works because it teaches your brain that you can tolerate the anxiety without the compulsion, and that the feared consequence doesn’t actually happen.

Let’s say you have checking compulsions around your door locks. In ERP, you’d lock your door once, walk away, and resist the urge to check. The anxiety will spike. It’ll feel unbearable. But you sit with it. And gradually—not immediately, but gradually—the anxiety decreases on its own. Your brain learns that you don’t need the compulsion to be safe, that the anxiety is uncomfortable but tolerable, and that nothing terrible happens when you don’t check.

You start with easier exposures and build up to harder ones. Maybe you begin by resisting just one checking compulsion per day. Then two. Then all of them. The process is gradual, structured, and done with therapist support. It’s not comfortable—honestly, it’s quite uncomfortable—but it’s effective. Studies show that 60-80% of people who complete ERP see significant improvement.

Medication helps many people too, particularly SSRIs like fluoxetine, sertraline, paroxetine, or fluvoxamine. These can reduce the intensity of obsessions and the drive to perform compulsions, making it easier to engage in therapy. Some people need medication long-term; others use it temporarily while doing intensive therapy. It’s individual.

Acceptance and Commitment Therapy, or ACT, is another approach that helps some people. It focuses on accepting intrusive thoughts and uncomfortable feelings rather than trying to eliminate them, while committing to valued actions despite discomfort. The goal isn’t making the thoughts or anxiety go away—it’s building a life you care about even when those experiences are present.

FAQs About Compulsions: Definition, Causes and Possible Symptoms

Are compulsions the same as OCD?

Not exactly. Compulsions are a symptom that appears most prominently in OCD, but they’re not synonymous with the disorder itself. OCD involves both obsessions and compulsions (though sometimes one is more prominent than the other). You can have compulsive behaviors without meeting full criteria for OCD—they might be part of another condition or occur independently. However, when people talk about compulsions in a clinical sense, they’re usually discussing them in the context of OCD since that’s where they’re most characteristic and problematic.

Can you have compulsions without obsessions?

This is tricky. Technically, compulsions are responses to obsessions or internal rules. But some people report compulsive behaviors without obvious obsessive thoughts. Often, though, when we dig deeper, there are subtle obsessions—vague feelings of dread, sense that something’s wrong, need for things to feel “just right”—that the person hasn’t articulated as thoughts. Some researchers think everyone with compulsions has obsessions, even if they’re not always conscious of them. That said, body-focused repetitive behaviors like hair-pulling sometimes occur more automatically without clear obsessive thoughts driving them.

How do I know if my habits are compulsions?

Ask yourself these questions: Can I easily stop the behavior if I want to? Does trying to stop create significant anxiety or distress? Does the behavior interfere with my daily life, take up substantial time, or cause me shame? Am I performing the behavior to prevent something bad from happening or to reduce uncomfortable feelings? If you answered yes to most of these, you might be dealing with compulsions rather than just habits. The key difference is control and distress—habits are relatively easy to modify, while compulsions feel impossible to resist without significant discomfort.

Do compulsions ever go away on their own?

Sometimes symptoms wax and wane. Stress tends to worsen compulsions, so during calmer periods they might decrease. But significant compulsions rarely disappear completely without treatment. They might shift—checking compulsions might replace washing compulsions, for example—but the underlying pattern usually persists. Some people have periods where symptoms are minimal, but they often return during stressful times. This is why getting proper treatment matters—it gives you tools to manage symptoms when they arise rather than waiting for them to magically resolve.

Can children have compulsions?

Absolutely. OCD often emerges in childhood or adolescence, though it can start in adulthood too. Kids might check things repeatedly, wash excessively, need things arranged perfectly, or perform mental rituals. Sometimes it’s hard to distinguish compulsions from normal childhood rituals and magical thinking, which is why professional evaluation matters. Early intervention helps significantly—teaching kids ERP skills early can prevent symptoms from becoming entrenched. If you notice your child performing repetitive behaviors that seem to cause distress or interfere with functioning, it’s worth consulting with a mental health professional who specializes in childhood OCD.

Is it possible to have only mental compulsions?

Yes, definitely. Sometimes called “Pure O” (though that’s a misleading term since compulsions are still present—they’re just mental), this involves primarily mental rituals rather than visible behaviors. The person might spend hours mentally reviewing events, repeating phrases silently, counting in their head, or trying to neutralize bad thoughts with good ones. These mental compulsions are just as time-consuming and distressing as physical ones but harder for others to recognize, which can be incredibly isolating. Treatment approaches are the same—ERP works for mental compulsions by having you resist the mental rituals when obsessive thoughts arise.

Will medication alone cure compulsions?

Probably not completely, though it might help significantly. Medication, particularly SSRIs, can reduce the intensity and frequency of compulsions, making them more manageable. But research shows that combining medication with ERP therapy produces the best outcomes. Some people do well enough on medication alone that they don’t pursue therapy, while others find medication makes therapy work better by reducing symptoms enough to engage in exposures. Many people eventually discontinue medication after successful therapy without symptoms returning, though others need long-term medication management. It’s individual and something to discuss with your treatment providers.

Can stress make compulsions worse?

Absolutely. Stress is one of the most common triggers for worsening compulsions. When you’re stressed, anxious, or overwhelmed, the obsessions often become more intrusive and distressing, driving increased compulsive behaviors. Major life changes, relationship problems, work stress, health issues—all of these can exacerbate symptoms. This is why managing stress through healthy coping strategies—exercise, sleep, social connection, relaxation techniques—is an important part of managing compulsions long-term. During high-stress periods, you might need to intensify treatment or lean more heavily on coping skills you’ve learned.

How long does treatment for compulsions take?

It varies widely depending on severity and individual factors. Intensive ERP programs might run for several weeks of daily therapy. Standard outpatient therapy usually involves weekly or twice-weekly sessions for several months. Some people see significant improvement within 12-20 sessions; others need longer treatment. The good news is that even short-term ERP can produce meaningful change, and skills learned in therapy continue working after treatment ends. Maintenance sessions or periodic “tune-ups” help some people manage symptoms long-term. The key is finding a therapist trained specifically in ERP for OCD—not all therapists have this specialized training, and it makes a real difference in outcomes.