Why do the sensible things keep the fear going?
Because they are aimed at the uncertainty, and the uncertainty is the one thing that cannot be removed.
After cancer, the question underneath the fear is whether it will come back. Nobody can answer that with certainty, not the oncologist, not the scan, not you. So the mind does the next best thing. It looks for ways to make the not knowing go away for now.
Here is the mechanism, stated once.
The strategies that feel most responsible all work by getting rid of uncertainty quickly. Every time uncertainty is removed that way, the brain learns that it was dangerous and could not have been sat with. So the next time a twinge or a reminder brings the uncertainty back, the alarm goes off a little faster and the need to clear it feels a little more urgent. Tolerance for not knowing gets smaller, even as the effort to manage it gets bigger.
None of this means anyone is coping badly. Every strategy below is a sensible response to a real threat. The problem is that it keeps being applied after the threat has changed shape, from something happening now to something that might happen later.
If reassurance and late night searching are the parts that sound most familiar, why reassurance stops working after cancer covers those in detail. This piece is about the quieter ones.
Is checking my body a bad thing after cancer?
No. Knowing your body and reporting changes is part of good follow-up care, and your treating team will have told you what to look out for. The question is not whether you check. It is what the checking is doing.
There are two quite different kinds of checking, and from the outside they look identical.
One is checking for information. It happens at a sensible frequency, it follows the guidance your team gave you, and when it is done, it is done.
The other is checking for a feeling. It happens more often than anyone advised, often at the same spot, often more than once in a row, and it stops when the feeling settles rather than when the information is in. Pressing on a scar until it is sore. Feeling for lymph nodes every morning and again before bed. Looking in the mirror at an angle to see whether something has changed since yesterday.
The second kind keeps attention trained on the body, and a body that is being watched closely will always offer something to notice. Hypervigilance to bodily symptoms is one of the features researchers have identified as marking a more intense, clinical level of fear of recurrence (Mutsaers et al., 2020). When checking looks like this, the fear is usually the one doing the steering.
A useful question to ask yourself after a check: did I learn something, or did I just feel better for a bit?
Is it bad to avoid things that remind me of cancer?
Avoidance makes complete sense in the short term and usually costs more in the long term.
It can look like changing the channel when a hospital drama comes on. Taking the long way round so you do not drive past the hospital. Leaving the room when someone starts talking about a diagnosis. Putting off the follow-up appointment, or not opening the letter. Not making plans for next year, just in case.
Each one works. The discomfort is skipped. But the brain draws a conclusion from every avoided reminder, which is that the reminder was too much and had to be escaped. The list of things that need avoiding tends to grow rather than shrink, and life gets quietly smaller around the fear.
There is one form of avoidance that matters more than the others. If the fear is stopping you from attending appointments or opening results, raise it with your GP or treating team, because that one has a direct cost to your care.
Does trying not to think about it work?
Mostly not, and it is not for lack of trying.
Pushing a thought away means keeping an eye out for it, so you know what to push away. That keeps it close. Most people have noticed that being told not to think about something makes it louder, and fear of recurrence is no exception. The harder the thoughts are pushed down during the day, the more likely they are to turn up at night, when there is nothing left to push them with.
Arguing with the thoughts has a similar problem. Every round of "but the scan was clear" is another round spent inside the fear, and the fear always has one more what if.
There are skills for this, and they can be learned. It is not a personality trait you either have or do not.
Does keeping busy help with fear of recurrence?
Busy is good. Busy as a strategy for never being alone with your thoughts is a different thing.
Ordinary life getting fuller again after treatment is a healthy sign. But if every gap in the day has to be filled, if stopping feels risky, if the fear arrives the moment the car is parked or the house goes quiet, then the busyness is working as another way of not being with the uncertainty. It holds the fear off rather than letting it settle, and it tends to fall apart on holidays, at weekends, and at 2am.
A rough test: if a quiet half hour feels restful, the busyness is just life. If a quiet half hour feels like something to be got through, it is probably doing a second job.
When should I get help with fear of cancer coming back?
Keep two things separate.
A new or persistent physical symptom is always a question for your GP or treating team. Nothing here means a symptom is only anxiety, and nobody should talk themselves out of getting something checked. Keep following the checking guidance your team has given you.
The fear itself is worth raising with a professional if it has been there most of the day, on most days, for two weeks or more; if the checking, avoiding or pushing away is taking up a lot of your time or energy; if you are putting off appointments or results; or if it is getting in the way of sleep, work, relationships or making plans. Start with your GP or treating team and say plainly that fear of the cancer coming back is taking up a big part of your day. Booking that appointment does not commit you to anything.
If the fear is taking up a lot of room but you are not in crisis, there is also help built specifically for it. Calm After Cancer is my eight-week program for fear of cancer recurrence: the checking, the scan anxiety, the reassurance that never quite holds. It teaches the skills used in research-tested treatments for this fear, one week at a time, with a members' group where you can ask me questions as they come up. It is education rather than therapy, and it works alongside your GP and treating team rather than replacing them. Take a look at Calm After Cancer.
If you are having thoughts of harming yourself, contact Lifeline on 13 11 14, or call 000 in an emergency.
If you are not sure how intense the fear is for you, how to tell whether your fear of cancer coming back is normal walks through the levels and what each one tends to look like.
Where does this understanding come from?
The international consensus on fear of cancer recurrence lists coping strategies that keep the problem going among the features that separate a clinical level of fear from a normal response (Lebel et al., 2016). Later international work identified hypervigilance to bodily symptoms as one of the key characteristics of clinical fear of recurrence (Mutsaers et al., 2020), and researchers in the field have described increased surveillance and body checking as one of the ways people respond to the uncertainty that follows cancer (Butow et al., 2021). The approach here also draws on metacognitive and acceptance-based approaches, which focus on how a person responds to worry rather than on arguing with what the worry says.
This article is education. It is not therapy, it does not replace an individual assessment, and it makes no promise that the fear will go away.
Where can I go from here?
If this sounded familiar, The Cancer Rollercoaster community is free to join. You can read and listen at your own pace, nobody has to post anything, and reading along for months without saying a word is completely normal there.
On Tuesday 13 October at 1:30pm (Sydney time) there is a free live session on fear of cancer coming back: the loop underneath it, why reassurance keeps wearing off, and which part of it can actually be changed. It runs inside the community and it is recorded, so you can come live or watch it afterwards.
New to the community? Join here first, then save your spot.
Already a member? Save your spot for 13 October
References
Butow P, Lebel S, Shaw J, Humphris G. Editorial: Uncertainty, anxiety, and fear of cancer recurrence. Frontiers in Psychology. 2021;12:811602. doi:10.3389/fpsyg.2021.811602
Lebel S, Ozakinci G, Humphris G, et al. From normal response to clinical problem: definition and clinical features of fear of cancer recurrence. Supportive Care in Cancer. 2016;24(8):3265-3268. doi:10.1007/s00520-016-3272-5
Mutsaers B, Butow P, Dinkel A, et al. Identifying the key characteristics of clinical fear of cancer recurrence: an international Delphi study. Psycho-Oncology. 2020. doi:10.1002/pon.5283