“Are you sure I didn't offend them?” “You would tell me if I had done something terrible, wouldn't you?” “Can you check this one more time?” These questions can sound entirely reasonable, particularly when the person asking is distressed and the answer seems obvious. A partner, parent or friend reassures them, anxiety falls and everybody gets a little breathing room.
The difficulty is that obsessive-compulsive disorder learns from what happens next. If relief arrived because another person supplied certainty, the mind has less opportunity to discover that uncertainty can be tolerated without another check. The next doubt may return more quickly, ask for a more precise answer or move to a new subject altogether.
Reassurance can function like a compulsion
Compulsions are not limited to visible rituals such as washing or checking a lock. They can include reviewing a memory, scanning the body, researching, confessing, comparing feelings and asking other people to settle a doubt. What makes the behaviour compulsive is not its appearance but its function: it is being used to obtain certainty or neutralise distress.
Research on reassurance seeking has linked it with obsessive-compulsive symptoms, dysfunctional beliefs and negative emotion. The studies do not prove a simple one-way cause, because more severe OCD naturally produces more requests for help, but they fit the clinical cycle we often see: doubt, distress, reassurance, relief, then renewed doubt.
The content can be convincing because OCD usually selects something the person cares about. A kind person worries they may have caused harm. A careful parent fears missing danger. Someone who values their relationship monitors whether they feel exactly the “right” amount of love. The problem is not the value. It is the impossible standard of certainty being demanded around it.
How families get pulled into the cycle
Families and partners rarely accommodate OCD because they are careless or weak. They do it because someone they love is suffering, arguments are exhausting and reassurance appears to help. Accommodation might include answering repeated questions, changing routines, avoiding certain words or places, completing tasks for the person, or participating in checking.
An updated 2024 meta-analysis brought together 108 studies involving 8,928 people with OCD. Family accommodation had a moderate association with symptom severity, and it tended to reduce during both individual and family-focused CBT. Baseline accommodation did not, however, predict how much OCD improved. That is a useful correction to any simplistic message that families are “causing” the disorder.
Changing accommodation needs care. Abruptly refusing every request can feel punitive and may turn the household into another battleground. A better plan is usually collaborative: identify which responses feed the cycle, agree on language in advance and reduce participation in a graded way while remaining emotionally available.
What ERP is trying to teach
Exposure and response prevention, usually shortened to ERP, helps a person approach a feared thought, situation or feeling while reducing the ritual used to make it safe. The aim is not to prove the feared outcome impossible. In fact, turning exposure into a certainty test simply gives OCD another ritual.
The newer way of explaining ERP emphasises learning: “I can have this doubt and choose what I do next.” Anxiety may fall during an exercise, but that is not the only marker of success. A person can complete a useful exposure while still feeling unsettled, because the important change is that behaviour is becoming less controlled by the demand for certainty.
A 2026 network meta-analysis of 68 controlled trials found that several psychotherapies reduced OCD symptoms compared with control conditions, although the evidence was heterogeneous and many studies carried a high risk of bias. It did not establish one universally superior therapy. For an individual person, treatment quality, a sound formulation and whether the actual compulsions are being addressed matter more than a branded technique alone.
A response that is caring without providing certainty
A helpful response often acknowledges the distress and the pattern at the same time: “I can see how uncomfortable this is, and I think answering again would help OCD rather than help you.” The person can then be supported to return to the agreed plan, continue the valued activity or allow the question to remain open.
This is not emotional withdrawal. Warmth, company and practical help can remain. What changes is the job being given to the other person: they are no longer required to certify that nothing bad happened, nothing bad will happen and the sufferer is definitely a good person. Nobody can provide that level of certainty for long, however lovingly they try.
Research drawn on
- Hermida-Barros L, Primé-Tous M, García-Delgar B, et al. Family accommodation in obsessive-compulsive disorder: an updated systematic review and meta-analysis. Neuroscience & Biobehavioral Reviews. 2024.
- Haciomeroglu B. The role of reassurance seeking in obsessive compulsive disorder. BMC Psychiatry. 2020.
- Wang Y, Miguel C, Ciharova M, et al. Effectiveness and acceptability of different psychotherapies for obsessive-compulsive disorder: network meta-analysis. British Journal of Psychiatry. 2026.