If you’ve found your way to this article, there’s a good chance you know the loop already. A sensation in your body catches your attention. A headache that lingers, a strange twinge in your chest, a mole that looks different to how you remember it. Within minutes, your mind is running through worst case scenarios. You might check the spot again, search your symptoms online, or call someone hoping they can tell you it’s nothing. For a moment, that helps. Then the worry creeps back in.
If this sounds familiar, I want to offer something other than a symptom checklist or a reassurance I can’t honestly give. I want to explain what’s actually happening in your brain when this cycle takes hold, because understanding the mechanism is often the first real step toward loosening its grip.
What health anxiety actually is
Health anxiety is a persistent, distressing preoccupation with the idea that you have, or are at risk of developing, a serious illness. It can involve frequent body checking, repeated reassurance seeking, extensive symptom research, or the opposite: avoiding medical information or appointments because thinking about them feels unbearable.
You may know this as hypochondria. Diagnostic terms have shifted, and what used to be called hypochondriasis is now generally understood as illness anxiety disorder or somatic symptom disorder, as outlined by the Cleveland Clinic. “Health anxiety” has become the more common, less stigmatising general term for the experience.
Like most forms of anxiety, this exists on a spectrum. Almost everyone worries about their health occasionally. It becomes a more significant concern when the worry is frequent, resistant to medical reassurance, and starts interfering with daily life. The first Australian population study on this, published in the British Journal of Psychiatry, found it affects around 5.7% of Australian adults at some point in their life, with 4.2% experiencing it in any given year, and that people with health anxiety report significantly higher psychological distress and greater use of health services. This is common, and genuinely difficult to live with.
Your brain isn’t broken, it’s protecting you (and getting it wrong)
Here’s the reframe I find most useful, and it’s grounded in real psychological theory rather than being a comforting phrase.
Your brain’s most fundamental job isn’t comfort, it’s keeping you alive. Underneath modern life, you’re carrying a threat detection system that evolved to notice danger quickly and respond before you’ve consciously registered what’s happening. That system doesn’t distinguish well between a genuine emergency and something that merely resembles one, because a false alarm costs far less than missing a real threat.
Applied to your body, this means your brain is constantly monitoring internal sensations, trying to work out whether any given one means something is wrong. For most people this runs quietly in the background. But for some, particularly after a health scare, a family member’s serious illness, or early medical experiences, this monitoring becomes hypervigilant, flagging ordinary sensations like a fast heartbeat or a tension headache as potential evidence of serious illness.
This is the core of the cognitive model of health anxiety, developed by psychologist Paul Salkovskis and colleagues, which proposes that health anxiety is maintained by catastrophically misinterpreting normal bodily sensations as signs of illness, as summarised by Psychology Tools.
Your brain isn’t malfunctioning in some mysterious way. It’s doing what it evolved to do, erring toward caution. The problem is this protective instinct keeps firing false alarms in an otherwise healthy body, and each one feels completely real in the moment.
Why the “helpful” responses keep the cycle going
This is often the part that causes the most self criticism, so it’s worth sitting with.
When health worry hits, checking your body, searching symptoms, seeking reassurance, avoiding appointments, these aren’t signs of weakness. They make complete sense: your nervous system has just told you something might be wrong, and these are reasonable attempts to find safety. The difficulty is that while they bring brief relief, they tend to strengthen the cycle rather than resolve it. Checking repeatedly can make you more attuned to normal bodily variation, so you notice more, not fewer, sensations. Reassurance typically fades within hours, sometimes minutes, before worry resurfaces, often about something else. Avoidance prevents the fear from ever being tested against reality, so it stays exactly as intense.
None of this happens because you’re doing something wrong. These responses were designed to reduce threat quickly, which they do, briefly, before the system resets and starts scanning again. In therapy, we’re not trying to eliminate your caution about your health. We’re gently working with the pattern that keeps renewing the anxiety.
Dr Google and the modern shape of health anxiety
Health anxiety has always existed, but the internet has changed its shape. Researchers use the term cyberchondria for anxiety driven, repeated online searching about symptoms, and it’s increasingly its own area of study. Researchers at the Hunter Medical Research Institute have suggested close to 6% of the Australian population experiences this pattern. Separately, UNSW researchers ran the first published evaluation of online treatment for cyberchondria, and found it reduced the frequency and distress of health related searching, with these changes linked to genuine improvements in health anxiety. The same team noted that searching usually starts as an attempt to feel reassured, but tends to increase anxiety instead, partly because search results skew toward rare, serious explanations over the far more likely benign ones.
If you find yourself searching symptoms late at night until you feel worse than when you started, this isn’t a personal failing. It’s a predictable outcome of pairing an anxious threat detection system with a tool built to surface worst case information quickly.
Is it health anxiety, or something else?
Health anxiety overlaps with several other experiences, though a proper assessment always needs a qualified professional rather than self diagnosis.
Panic disorder often involves similar catastrophic thoughts, but the feared catastrophe feels immediately impending, whereas in health anxiety it’s usually imagined unfolding over a longer timeframe.
Generalised anxiety disorder may include health as one of several worry topics, while health anxiety is more specifically and persistently focused on illness.
OCD has meaningful overlap, and the distinction is genuinely debated in the literature. Broadly, health anxiety centres on believing illness is present or likely, while OCD centres more on intrusive doubt and compulsions to neutralise it.
A genuine, undiagnosed medical condition deserves to be said plainly: not every persistent symptom is health anxiety, and having health anxiety doesn’t rule out a real medical issue alongside it. New, persistent, or worsening symptoms always warrant seeing your GP first.
What tends to help
I draw on two complementary approaches in my practice. Cognitive behavioural therapy (CBT) works directly with the misinterpretation cycle, gently testing the evidence for catastrophic interpretations and gradually reducing checking and reassurance seeking in a paced, collaborative way. Acceptance and commitment therapy (ACT) works on your relationship with uncertainty itself, since intolerance of not knowing for certain that you’re well is often a significant driver. A small pilot study of group based ACT for health anxiety, published in the Journal of Contextual Behavioral Science, found meaningful shifts in the processes thought to maintain the condition, though it was an early, uncontrolled study rather than a definitive trial. In practice, this might mean learning to notice an anxious thought as a thought, rather than a fact demanding immediate action, and building a life that isn’t organised around eliminating all uncertainty about your health, which none of us can fully do.
I find CBT and ACT work well together: one loosens the grip of specific catastrophic interpretations, the other builds capacity to live well alongside the uncertainty that comes with having a body.
A gentle self-reflection
This isn’t a diagnostic checklist. It may simply be useful for reflection.
- I regularly check my body for signs something might be wrong
- New sensations trigger significant worry, even without clear reason for concern
- I search my symptoms online often, and it rarely leaves me calmer
- Reassurance helps briefly, but the worry tends to return
- I avoid appointments or health information because thinking about them feels overwhelming
- Health worry takes up significant time or energy most days
If several of these resonate and the pattern has persisted for six months or more, it may be worth speaking with your GP or a psychologist, not because something is wrong with you, but because this is genuinely treatable.
Finding support in Australia
A sensible first step is usually your GP, who can rule out underlying medical concerns and discuss whether a Mental Health Treatment Plan under Medicare’s Better Access initiative might be appropriate. If you’re not sure how that process works, I’ve written a plain-English guide to accessing a psychologist under Medicare. If health anxiety is significantly affecting your wellbeing, Beyond Blue is available on 1300 22 4636, and Lifeline on 13 11 14, 24/7. 13YARN offers culturally safe support for Aboriginal and Torres Strait Islander people on 13 92 76.
A final thought
The part of you that keeps scanning for danger isn’t foolish or broken. It’s a genuinely protective system doing what it evolved to do, just a little too readily, in a context it wasn’t quite designed for. Recovery doesn’t mean never thinking about your health again. It means building a different relationship with uncertainty, one where a passing sensation doesn’t have to hijack your day, and you can hold the unpredictability of having a body without it running your life. That’s genuinely possible, and you don’t have to work it out alone.
Frequently asked questions
Is health anxiety a form of OCD?
There’s overlap, and researchers continue to debate exactly where the boundary lies. Broadly, health anxiety centres on believing illness is present or likely, while OCD centres more on intrusive doubt and compulsions to neutralise it. A psychologist can help clarify which pattern fits your experience.
How do you calm health anxiety?
There’s no instant fix, but CBT and ACT both tend to help over time, alongside reducing compulsive online symptom searching, which research suggests increases rather than decreases anxiety.
Can health anxiety cause physical symptoms?
Yes. Anxiety itself produces real sensations, a racing heart, muscle tension, dizziness, which can then be misinterpreted as evidence of illness, feeding the cycle further.
What’s the difference between health anxiety and hypochondria?
They describe largely the same experience. Hypochondria was the older clinical term, since replaced in diagnostic manuals by illness anxiety disorder and somatic symptom disorder, with “health anxiety” now the more common general term.
Does health anxiety ever go away?
Many people experience significant, lasting improvement with support. Therapy usually aims not to eliminate all health related worry, since some caution about our health is normal, but to reduce its frequency, intensity, and impact to a manageable level.