OCD

What is OCD?

OCD stands for Obsessive Compulsive Disorder.
It is a mental health condition involving obsessions, compulsions, or both.
Obsessions are unwanted and recurring thoughts, images, urges or doubts that can cause significant anxiety or distress.
Compulsions are things a person feels driven to do in an attempt to reduce that distress, prevent something bad from happening or make something feel “right.”
OCD can affect children, teenagers and adults.
It is much more than simply liking things to be clean, organised or arranged neatly.

OCD is not a personality trait

People sometimes casually say:
“I'm a bit OCD about keeping things tidy.”
But enjoying organisation, preferring symmetry or liking a clean house is not the same as having OCD.
OCD can be extremely distressing and time-consuming.
Someone may feel trapped in cycles of:
fear → anxiety → compulsion → temporary relief → fear returning.
The person may recognise that their fears or behaviours seem excessive and still find them incredibly difficult to resist.

What is an obsession?

An obsession is an unwanted thought, image, urge or doubt that repeatedly enters someone's mind.
It may involve fears about:
contamination
illness
harm
making a mistake
responsibility
relationships
religion or morality
sexual themes
things not feeling right
or uncertainty about whether something happened.
The content can be extremely upsetting precisely because it often involves things the person does not want to happen.

Intrusive thoughts

Most people experience strange, unwanted or upsetting thoughts occasionally.
These are often called intrusive thoughts.
A random thought entering someone's mind does not mean they want it, believe it or intend to act on it.
With OCD, however, the person may attach enormous importance to the thought.
They might wonder:
“Why did I think that?”
“What if thinking it means I want it?”
“What if I lose control?”
“What if this says something terrible about me?”
The more desperately someone tries to obtain complete certainty about the thought, the more powerful the OCD cycle can become.

Thoughts are not actions

One particularly important thing to understand about OCD is:

Having a thought is not the same as wanting something to happen.

Someone can experience an intrusive thought that is completely opposite to their values, wishes and personality.
In fact, OCD often focuses on the things a person cares about most.
A loving parent may experience frightening intrusive thoughts involving their child.
A kind person may experience intrusive thoughts about harming somebody.
Someone who cares deeply about morality may become terrified that they have done something wrong.
The distress caused by the thought can itself demonstrate how strongly it conflicts with what the person actually wants or believes.

What is a compulsion?

A compulsion is something a person feels driven to do because of an obsession or uncomfortable feeling.
Compulsions are often attempts to:
reduce anxiety
prevent something bad happening
obtain certainty
or make something feel “just right.”
The relief they provide is usually temporary.
Because performing the compulsion reduces anxiety for a while, the brain can begin learning:
“I did that and nothing bad happened, so I must need to do it again.”
This can strengthen the OCD cycle.

Compulsions are not always visible

When people imagine OCD, they often picture someone repeatedly washing their hands or checking a door.
Those can be compulsions, but OCD can involve many others.
Visible compulsions might include:
washing
cleaning
checking
counting
touching
repeating actions
arranging objects
avoiding things
or asking the same question repeatedly.
But compulsions can also happen entirely inside someone's mind.

Mental compulsions

Mental compulsions can be difficult for other people to notice.
Someone might repeatedly:
review a memory
repeat words or phrases internally
count
pray
analyse a thought
check how they feel
try to replace a “bad” thought with a “good” one
or repeatedly attempt to prove something to themselves.
The person may look completely still while their brain is performing an exhausting series of mental rituals.

Checking

Some people with OCD repeatedly check things.
They might check:
doors
windows
electrical appliances
messages
schoolwork
their body
or whether they have accidentally harmed somebody.
They may know they checked only moments ago but still experience:
“What if I didn't?”
The problem is not necessarily memory.
OCD can create intense doubt and a need for certainty.

Contamination fears

Some OCD involves fears about contamination.
A person might worry about:
germs
illness
bodily fluids
chemicals
dirt
or something feeling contaminated even when there is no obvious physical dirt.
They may:
wash repeatedly,
avoid touching things,
change clothes,
clean belongings,
avoid particular places,
or ask other people to follow cleaning rules.
The fear and distress can become severe enough to significantly interfere with everyday life.

Symmetry and “just right” feelings

Not all OCD is based on a specific feared disaster.
Sometimes something simply feels wrong, uneven or incomplete.
Someone may feel compelled to:
touch something equally with both hands
repeat an action
arrange objects
rewrite something
or perform an action until it feels “just right.”
The person may struggle to explain what would happen if they did not do it.
They simply experience an intense feeling that they cannot leave it unfinished.

Harm OCD

Some people experience intrusive thoughts involving harm.
They may become frightened that they could hurt themselves or somebody else despite not wanting to do so.
They might avoid:
knives
driving
being alone with someone
or particular situations because they fear:
“What if I suddenly lose control?”
They may repeatedly check their memories or ask others for reassurance.
Intrusive thoughts associated with OCD should not automatically be interpreted as intentions.
However, genuine thoughts about wanting to harm oneself or another person still need appropriate assessment and support.

Responsibility

OCD can create an exaggerated feeling of responsibility.
Someone might believe:
“If I don't check this and something happens, it will be my fault.”
They may feel responsible for preventing events that they realistically have very little control over.
This can make apparently simple decisions feel extremely important.
The person may spend large amounts of time trying to ensure they have made the perfectly safe or morally correct choice.

Reassurance seeking

Reassurance can become a compulsion.
Someone might repeatedly ask:
“Are you sure I'm okay?”
“Did I do something wrong?”
“Are you angry with me?”
“Do you think I would ever do that?”
“Are you absolutely certain?”
Reassurance usually helps briefly.
Then OCD produces another:
“But what if...?”
The person asks again.
This is why repeatedly providing absolute reassurance can sometimes unintentionally become part of the OCD cycle.

Confessing

Some people with OCD feel compelled to confess thoughts, feelings or tiny mistakes.
They might repeatedly tell somebody:
“I had a bad thought.”
“I think I might have lied.”
“I need to tell you something.”
The confession may temporarily reduce guilt or anxiety.
But soon another memory or thought appears and the need to confess returns.
This can be particularly confusing for parents when a child repeatedly reports things that appear very minor or sometimes uncertain.

Avoidance

Avoidance can also become part of OCD.
Someone may avoid:
people
places
objects
foods
television programmes
news
numbers
words
or situations that trigger intrusive thoughts.
Avoidance reduces anxiety temporarily.
But it can also teach the brain:
“That situation really was dangerous.”
Over time, the person's world may become increasingly restricted.

The OCD cycle

A simplified OCD cycle might look like this:
Intrusive thought: “What if I left the door unlocked?”
Anxiety: “Someone could get in and it would be my fault.”
Compulsion: Check the door.
Relief: “Okay. It's locked.”
Then:
Doubt: “But did I check properly?”
The person checks again.
The temporary relief reinforces the idea that checking was necessary.
Treatment often involves learning how to interrupt this cycle.

OCD wants certainty

One of the things OCD often demands is complete certainty.
It asks:
“Are you absolutely sure?”
But everyday life rarely provides 100% certainty.
Most people lock the door and accept:
“I'm reasonably confident I locked it.”
OCD may demand:
“Prove it.”
Learning to tolerate some degree of uncertainty can therefore be an important part of OCD treatment.

OCD can attach itself to things that matter

OCD often focuses on areas that are particularly important to the individual.
Someone who cares deeply about their family may experience intrusive fears about family members being harmed.
Someone who values honesty may become terrified that they have lied.
Someone who cares about being kind may become frightened by an unwanted aggressive thought.
This can make OCD feel extremely personal.
But the content of an intrusive thought does not define somebody's character.

OCD in children and young people

Children can experience OCD too.
A child might:
wash repeatedly
check things
repeat movements
ask the same questions
need things done in a particular order
become distressed when rituals are interrupted
avoid particular objects or situations
or need family members to participate in routines.
Young children may not always be able to explain why they need to do something.
They may simply know that something feels frightening or unbearably wrong if they do not.

OCD can affect school

OCD can make education extremely difficult.
A child might:
rewrite work repeatedly
rub out tiny mistakes
check answers again and again
take much longer to finish tasks
avoid touching equipment
struggle with toilets
repeatedly seek reassurance
or become distracted by intrusive thoughts.
A pupil who appears:
slow
perfectionistic
distracted
or unwilling to finish
may actually be managing significant internal anxiety.

OCD and perfectionism

OCD and perfectionism are not the same thing.
Someone can be a perfectionist without having OCD.
However, OCD can involve fears about making mistakes or a need for something to feel exactly right.
A child may spend an enormous amount of time trying to produce work that feels safe enough to submit.
Simply saying:
“It doesn't need to be perfect.”
may not be enough to stop the underlying OCD process.

OCD and anxiety

OCD and anxiety are closely connected, but OCD is not simply ordinary worrying.
Obsessions can create intense anxiety, disgust, guilt or discomfort.
Compulsions then temporarily reduce those feelings.
This creates the repetitive cycle that makes OCD particularly difficult.
A person can also experience a separate anxiety disorder alongside OCD.

OCD and neurodivergence

OCD is a mental health condition, rather than a neurodevelopmental condition such as autism or ADHD.
However, someone can be autistic, have ADHD or another form of neurodivergence and also have OCD.
It is important not to assume that every repetitive behaviour is OCD.
For example, an autistic person's stimming, routines or focused interests may have completely different purposes from an OCD compulsion.
Understanding why the person is doing something matters.

OCD compulsions and autistic routines are not automatically the same

An autistic person may enjoy a routine because it provides predictability, comfort or regulation.
A person with OCD may feel driven to perform a ritual because they believe something terrible might happen otherwise, or because not completing it causes intense distress.
There can be overlap, and distinguishing between them is not always straightforward.
The important question is not simply:
“Is this behaviour repetitive?”
but:
“What is happening for this individual when they do it or cannot do it?”

Tics and compulsions

Tics and compulsions are also different, although someone can experience both.
A tic is a sudden, repetitive movement or sound that can be difficult to control.
A compulsion is usually connected with an obsession, feared consequence or need to achieve a particular feeling.
Because they can sometimes look similar, professional assessment can be useful when it is unclear what somebody is experiencing.

Family accommodation

OCD can gradually involve the whole family.
A child might ask family members to:
check something
wash something
answer repeated questions
avoid certain places
say particular words
or complete rituals in a particular way.
Families often participate because they can see how distressed the person becomes.
This is completely understandable.
However, repeatedly changing family life around OCD rituals can sometimes unintentionally strengthen the disorder.
Professional support can help families learn how to reduce involvement gradually and compassionately rather than suddenly removing reassurance or support.

“Just stop doing it”

A person with OCD may know their compulsion is causing difficulties.
They may desperately want to stop.
Telling them:
“Just don't do it.”
does not remove the intense anxiety or discomfort underneath the behaviour.
Equally, punishment or ridicule can increase shame and distress.
OCD requires understanding and, where appropriate, evidence-based treatment.

Supporting someone with OCD

Helpful support can include:
listening without judgement
taking their distress seriously
learning about OCD
avoiding criticism or ridicule
supporting access to professional help
and following treatment guidance about how to respond to compulsions and reassurance seeking.
It is important to separate:
supporting the person
from
supporting the OCD.
You can be compassionate about somebody's distress without agreeing with everything the OCD is telling them.

Treatment for OCD

OCD is treatable.
One of the main treatments recommended for OCD is Cognitive Behavioural Therapy (CBT) involving Exposure and Response Prevention (ERP).
ERP involves gradually and carefully facing situations that trigger obsessions while learning not to perform the usual compulsion.
This allows the person to discover that anxiety can eventually reduce without completing the ritual.
ERP should be appropriate to the person's age, needs and circumstances and is not simply about forcing somebody into their greatest fear.

Medication

Some people with OCD may also be offered medication, particularly when symptoms are more severe or psychological treatment alone has not been sufficient.
A type of antidepressant called a Selective Serotonin Reuptake Inhibitor (SSRI) may be used.
Medication decisions should be made with an appropriate healthcare professional, particularly for children and young people.

Getting help in the UK

If obsessive thoughts or compulsions are causing significant distress, taking up substantial amounts of time or interfering with school, work, relationships or everyday life, professional support may be appropriate.
A GP can be a useful starting point.
Adults in England may also be able to self-refer to NHS Talking Therapies, depending on local arrangements.
For children and young people, support may involve a GP, school or appropriate children and young people's mental health service.
The NHS provides information about symptoms and treatment through NHS — Obsessive compulsive disorder (OCD).

When intrusive thoughts involve harm

Because OCD can involve frightening intrusive thoughts, people may become terrified about telling anyone what they are experiencing.
They may worry that they will be judged or misunderstood.
Experiencing an unwanted intrusive thought is not the same as wanting or intending to act on it.
Professionals familiar with OCD understand that disturbing intrusive thoughts can form part of the condition.
However, if somebody genuinely wants or intends to harm themselves or somebody else, or there is an immediate risk to safety, this requires urgent professional help.
In an immediate emergency, call 999 or go to A&E.
In England, urgent mental health support can also be accessed by calling NHS 111 and selecting the mental health option. NHS — Urgent help for mental health

Recovery

Recovery from OCD does not necessarily mean never experiencing another strange or intrusive thought.
Everyone's brain produces unwanted thoughts sometimes.
Recovery can involve learning:
“I can have this thought without needing to solve it.”
“I don't need complete certainty.”
“I can experience anxiety without performing the compulsion.”
Over time, the thought can become less important and less powerful.

Remember

OCD is not simply liking things clean or organised.
Obsessions are unwanted thoughts, images, urges or doubts.
Compulsions can be physical or completely mental.
Intrusive thoughts are not the same as intentions.
OCD often attacks the things somebody values most.
Reassurance seeking can become part of the OCD cycle.
Children can experience OCD.
OCD and autism can occur together, but autistic routines and OCD compulsions are not automatically the same thing.
Someone may know a fear seems irrational and still experience intense distress.
OCD is treatable.
And perhaps most importantly:

A person is not their intrusive thoughts.

OCD can produce thoughts that feel frightening, shameful or completely opposite to who somebody knows themselves to be. With understanding, appropriate support and evidence-based treatment, those thoughts and compulsions can become much less powerful. 💜