02/09/2026
OCD: When Your Mind Won’t Let You Leave Something Alone
OCD is often misunderstood.
When people hear Obsessive Compulsive Disorder, they might picture someone repeatedly washing their hands, checking the door or needing everything to be perfectly organised.
But OCD can look very different from this.
It can be incredibly distressing, exhausting and isolating, and many people live with it for years without realising that what they are experiencing is OCD.
I have been seeing an increase in people struggling with OCD, and I want people to know one thing from the outset:
You are not alone. And your thoughts do not define you.
So, what actually is OCD?
OCD generally involves obsessions and compulsions.
An obsession is an unwanted, intrusive thought, image, feeling or urge that enters your mind and causes distress.
It might be:
“What if I accidentally hurt someone?”
“What if I have a serious illness?”
“What if I don’t really love my partner?”
“What if I’m a bad person?”
We all experience strange or unwanted thoughts. The difference with OCD is the meaning we attach to them.
The thought can become something we feel we must understand, solve or prove isn’t true.
The OCD cycle
When an intrusive thought creates anxiety, fear, disgust or uncertainty, we naturally want that feeling to stop.
So we do something to make ourselves feel safer.
We check. We wash. We avoid. We Google. We ask for reassurance. Or we repeatedly analyse the thought.
For a short time, we feel better.
But the brain learns:
“That behaviour made me feel safer, so I need to do it again next time.”
And the cycle continues:
Intrusive thought → anxiety → compulsion → temporary relief → intrusive thought.
This is why OCD can become so consuming.
What if I don’t have obvious compulsions?
This is where Pure O, or “purely obsessional OCD”, can be confusing.
Pure O isn’t actually a separate diagnosis, and the term can be misleading because compulsions are still present – they are simply less visible.
They may happen entirely in your mind.
You might replay conversations, analyse whether you really love someone, check how you feel, mentally reassure yourself, repeatedly test your thoughts or search online for certainty.
From the outside, you may appear completely calm.
Inside, your mind can be working overtime.
OCD often targets what matters most; attaching itself to the things we value.
If you’re a loving parent, you might experience frightening thoughts about harming your child.
If your relationship is important to you, you might become consumed by doubts about whether you really love your partner.
If being a good person matters deeply to you, OCD might make you question your morality.
This is why intrusive thoughts can feel so frightening.
But having a thought is not the same as wanting it to happen.
A thought isn’t an intention, a prediction or a reflection of your character.
Why does OCD happen?
There isn’t one single cause.
OCD is thought to involve a combination of biological, psychological and environmental factors. Genetics can play a role, and symptoms can become more noticeable during periods of stress or significant change.
Certain thinking patterns can also maintain OCD, including perfectionism, an increased sense of responsibility and difficulty tolerating uncertainty.
Most importantly, OCD isn’t your fault.
The good news is treatment can help.
If you recognise yourself here, you do not have to face OCD alone.
Although OCD can be a long-term condition, it can be managed, and treatment can make a significant difference to how much it affects your life.
One of the main psychological treatments is Cognitive Behavioural Therapy (CBT), particularly Exposure and Response Prevention (ERP).
ERP involves gradually facing thoughts, feelings or situations that trigger OCD while learning not to respond with the usual compulsion. The aim isn’t to eliminate anxiety completely, but to develop confidence that you can tolerate uncertainty without needing to perform the ritual or seek reassurance.
For some people, medication such as an SSRI may also be helpful and can be discussed with a GP or appropriate healthcare professional.
You don’t have to struggle alone.
Perhaps you’ve been frightened to tell someone what goes through your mind.
Perhaps you’ve worried they’ll think you’re strange, dangerous or a bad person.
But asking for help doesn’t mean there is something wrong with who you are.
It means something is causing you distress and you’re ready to understand it.
You are not your thoughts.
- You don’t have to answer every thought that enters your mind.
- You don’t have to achieve 100% certainty.
- And you don’t have to navigate OCD alone.
Sometimes the first step isn’t making the thought disappear; it is learning that you do not have to be afraid of it.