Why reassurance makes OCD worse, and what to say instead

Someone you love asks, for the fourth time this evening, whether you are sure the door was locked. Whether they said something offensive. Whether a thought they had means something terrible about them.

You answer, because answering is obviously the kind thing to do. They relax. For a few minutes, it worked.

That relief is the mechanism, and it is why the question comes back.

#The relief is real, and that is the problem

Reassurance works. That is not in dispute, and it is why everyone does it.

What it works on is the anxiety, right now, for a short while. What it teaches, over time, is that the anxiety was intolerable and had to be removed — that the only way through the feeling was the answer. So the next time the thought arrives, the need for an answer arrives with it, slightly stronger.

This is the same loop as handwashing, checking and counting. It does not look like a ritual because it is made of words and it involves someone else. But it has the shape of one.

#Reassurance is a compulsion

The International OCD Foundation describes exposure and response prevention as "The most important type of CBT for OCD", and defines the second half of it like this:

The response prevention part of ERP refers to making a choice not to do a compulsive behavior once the anxiety or obsessions have been "triggered."

Asking for reassurance is one of those behaviours. So is seeking it silently — mentally reviewing the evidence, replaying the conversation, checking how you feel to see whether the feeling has gone. Those count too, and they are harder to spot because nobody sees them happen.

Which means that for someone doing ERP, being answered is not neutral. It is the compulsion being completed, by a person who loves them.

#What the IOCDF tells families

The IOCDF publishes guidelines for family members, by Barbara Van Noppen, PhD and Michele Pato, MD. Several are directly about this, and they are worth reading in the original wording rather than my summary:

it is in everyone's best interest for family members to not participate in rituals

Do your best to not participate in the compulsions.

On answering the question, the guidelines identify the trap precisely:

the more you try to prove that the individual need not worry the more he disproves you

and advise:

Avoid lengthy rationales and debates.

This is the part that surprises people. The instinct when a reasonable explanation fails is to give a better explanation. But a better explanation is a bigger reassurance, and OCD metabolises it the same way — then returns with the gap your explanation did not close.

On limits, the guidelines say they may be needed on "How much reassurance is given", and add the sentence that matters most:

Limit setting works best when these expectations are discussed ahead of time and not in the middle of a conflict.

Agree it when everyone is calm. A limit invented in the middle of a distressing moment lands as a refusal. The same limit, agreed on a quiet afternoon, is a plan you are both keeping.

#It will feel like cruelty

The guidelines are honest about the cost, and this is the line to hold onto on a bad night:

you may be easily perceived as being mean or rejecting, even though you are trying to be helpful

That is worth expecting rather than discovering. You will not feel like someone helping. You will feel like someone withholding something small from a person in distress, which is a horrible thing to feel.

It is also why the guidelines suggest not doing this alone:

Attending a family educational support group for OCD, or seeing a family therapist with expertise in OCD, often facilitates family communication.

#The digital version is harder

An IOCDF post from July 2026, Digital Reassurance Seeking in OCD by Jordan Karr, PhD, covers what happens when the source of reassurance is not a person.

Its examples are familiar to anyone who has been there: "Excessive symptom-checking on WebMD", "Endlessly searching Reddit for answers to existential questions", and "Asking Google Gemini whether an intrusive thought makes you a monster."

And it names what makes a chatbot the hardest version of this. They

are available 24/7 and will continue to reassure users

where a skilled therapist would recognise that more reassurance is now doing harm.

A person gets tired. A partner eventually says we have done this one. A chatbot never does. It will answer the same question at 3am for the two-hundredth time, warmly, in slightly different words each time — which is precisely the thing that keeps the loop alive. The technology is not malicious. It is just infinitely patient, and infinite patience is the wrong medicine here.

The post's practical suggestions are small and worth trying: delay the urge, starting at five minutes and building up; walk without your phone; and practise the honest answer instead of the comforting one — maybe that will happen, maybe not. It ends by pointing at an ERP-trained therapist, which is the right ending.

#What to say instead

Short, warm, and the same every time. The sameness is the point — a varied answer is a new answer, and a new answer is reassurance.

• "I'm not going to answer that one, because we agreed I wouldn't."
• "I can't know for sure, and neither can you. That's the hard bit."
• "Maybe. Maybe not."
• "I'm here. I'm not answering it."

What to avoid: the evidence, the logic, the just-this-once exception at the end of a long day. One answered question after twenty refused ones teaches that persistence works, which is a worse lesson than never having started.

And none of this is a substitute for treatment. ERP with someone trained in it is the thing that changes the pattern. Everything here is about not making it harder in the meantime.

#A note on the app I build

Disclosed interest: Marea is mine.

It is a tool for practising ERP — building an exposure ladder, attaching a response-prevention rule to each rung, running timed sessions and watching distress come down on its own. The reason it belongs at the foot of this post is a design decision rather than a feature: it never reassures you. It will not tell you a fear is unlikely, will not say you are safe, and will not answer could I have done it? There is no chatbot and no community in it, for exactly the reason the section above describes — anything that can be asked, will be.

It also has no streaks and no daily check-in asking how anxious you feel, because each of those has an OCD-specific way of turning into a ritual. And it carries a short piece written for family members, which is the audience half of this post is for.

It is not treatment and it does not diagnose. If OCD is interfering with your life, a clinician who knows ERP is the thing worth finding.

#Frequently asked questions