Health anxiety: understanding it
Caring about your health is human. When worry about it starts running your days, there are real ways to loosen its grip.
By the numbers
How common health worry is, and how well help works.
How common
Getting better
What is health anxiety?
When worry about being ill starts to take over.
Health anxiety is when you spend so much time worrying that you are ill, or will become ill, that it starts to take over your life. You may also hear it called illness anxiety or, in older words, hypochondria.
Everyone worries about their health sometimes, like while waiting for test results or after noticing a new lump. That kind of concern is normal and often useful. Health anxiety is different in how big, how long and how costly the worry becomes.
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Noticing a change in your body, wondering about it, and getting it checked is a healthy thing to do. Most people feel some relief once a doctor has looked at it or the symptom fades.
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Health worry may have become a problem when it…
- Causes a lot of distress, or gets in the way of daily life
- Is out of proportion to the real chance of a serious illness
- Keeps coming back even after normal tests or a doctor’s reassurance
- Leads to lots of checking, reassurance-seeking or avoiding
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The NHS describes health anxiety as related to obsessive compulsive disorder (OCD), because both involve unwanted worries and urges to check or seek reassurance.
How can it feel?
In your thoughts, your body and what you do.
Health anxiety shows up in three places at once: the thoughts you have, the feelings in your body, and the things you do to try to feel safe. Each one can feed the others.
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Common fears include cancer, heart attack, multiple sclerosis, dementia or a thyroid problem. For some people the worry is vaguer: a nagging sense that something is “not quite right”.
- Doubting that a doctor or test has caught everything
- Finding it hard to concentrate on anything else
- Mentally scanning your body for signs
- Seeing ordinary sensations as signs of serious illness
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Each time you worry about your health, your body’s fight-or-flight alarm switches on. That can bring a racing heart, chest tightness, dizziness, tingling, nausea, sweating, tension and poor sleep.
These sensations are real, and they can be mistaken for signs of illness. That gives the worry even more to focus on.
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- Acting as if you are ill, like avoiding exercise
- Asking others again and again whether you are okay
- Avoiding anything about illness, like medical TV shows
- Checking your body for lumps, tingling or pain
- Searching symptoms online for long stretches
Why it keeps going: the cycle
Short-term relief that keeps long-term worry alive.
Health anxiety tends to run in a loop. Something sets off a worry, the worry brings anxiety and body sensations, and you check, search, ask or avoid to feel better. The relief is real, but it doesn’t last.
How the loop works
- A trigger: a twinge, a news story, a friend’s diagnosis
- A worried thought: “What if it’s serious?”
- Anxiety and body sensations rise
- You focus on the symptom, check, seek reassurance or avoid
- You feel a little relief, for a while
- The doubt returns, because no one can be 100% certain, and the loop starts again
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Paying close attention to a symptom can make it feel more intense. Checking behaviours, like pressing on a sore spot, can even bring on or worsen symptoms.
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Medical tests rule particular problems in or out. Doctors don’t have a test for everything, so no one can ever have a 100% guarantee of perfect health.
Chasing complete certainty keeps the cycle spinning. Learning to live with a normal amount of uncertainty is a big part of getting better.
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Avoiding doctors, hospitals, exercise or even thoughts about illness can lower anxiety in the moment. Over time, it keeps fears unchallenged, chips away at confidence and can shrink your life.
Two patterns: seeking care or avoiding it
Some people go to the doctor a lot; others stay away.
Health anxiety doesn’t always look like frequent doctor visits. Cleveland Clinic describes two patterns, and some people move between them.
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People with this pattern spend a lot of time in healthcare settings, see several specialists and often ask for tests. Relief after a normal result tends to be short.
Repeated tests and appointments can also cost money, time off work and travel.
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People with this pattern avoid healthcare, often from distrust or a belief that clinicians will dismiss them. Avoiding care can make the fear grow.
Common things people put off include check-ups, phoning for test results and telling a doctor about a worrying symptom.
“But my symptoms are real”
Health anxiety can sit alongside real symptoms and real illness.
Health anxiety can happen in people who are healthy, in people with real symptoms that haven’t been explained, and in people with a diagnosed condition. It does not mean your symptoms are “all in your head”.
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The issue in health anxiety is how you are coping with your symptoms or condition. If the response is constant worry, checking, reassurance-seeking or avoiding, health anxiety may still be worth working on.
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Some people with illness anxiety also have a real diagnosed illness, and may feel it is more serious than it is.
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In illness anxiety, the main problem is fear of having or getting a serious illness, often with few or mild symptoms. When distressing physical symptoms themselves take over, doctors may call it somatic symptom disorder.
Why does it develop?
No single cause, but some experiences raise the risk.
Experts don’t know exactly why some people develop health anxiety. A large review found risk-factor research very mixed, with no single clear cause.
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- Abuse, neglect or other trauma
- Being seriously ill as a child
- Serious illness in the family while growing up
Many people with health anxiety have none of these experiences, so they are possible influences, not explanations.
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A family history of health anxiety, other anxiety, or depression may raise the risk.
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Extreme stress is a known risk factor. Health worry also often starts or flares after a trigger, such as a friend or relative becoming ill.
It typically first appears in early adulthood, and symptoms can ease for a while and then return.
How it can affect your life
The hidden costs of constant health worry.
Health anxiety can take up hours of a day and affect far more than health. Naming the costs can help you decide what you want to change.
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Family and friends may join in the worrying, or become frustrated when reassurance never seems to be enough. You might feel let down when they don’t understand.
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Worrying, checking and searching can make it hard to concentrate. Appointments and online searching can eat into work or study time.
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Some people stop doing things they enjoy, like exercise or seeing friends. Fewer good moments can lead to low mood.
Treating health anxiety with CBT has also been shown to ease general anxiety and depression.
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Repeated trips to the doctor without clear results can leave both you and your provider dissatisfied. Some people feel disbelieved or labelled.
Myths and facts
Clearing up common misunderstandings.
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People with health anxiety cannot simply switch off their fears, and they do not create symptoms on purpose. The fear can feel completely real to them.
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Reassurance brings only short-lived relief, and the worry soon returns. Because no test can rule out everything, there is always another question.
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Checking your body and seeking medical advice is healthy. The goal is a helpful middle ground, not swinging from checking all the time to never checking.
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Health anxiety can be long-lasting, but there are steps you can take to keep it in check. CBT has strong evidence, with benefits lasting a year or more.
How community helps
You don’t have to carry health worry alone.
Support from loved ones and from medical and mental health professionals may make health anxiety less severe and make it easier to cope.
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Being honest with your provider about how much health anxiety affects your life helps them support you well.
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The NHS suggests doing something absorbing, like going for a walk or calling a friend, when the urge to check comes. Getting back to sport and socialising you’ve avoided helps too.
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Loved ones can help most by listening and showing they understand, while gently not answering the same health question again and again.
When and where to get help
Signs it’s time to reach out, and where to go.
Talk with a clinical provider or therapist if…
- Health worries are stopping you from living a normal life
- Self-help hasn’t made a difference
- You notice low mood, anxiety or other mood changes
- You are having thoughts of ending your life
Cognitive behavioural therapy (CBT) helps people talk through their fears and learn healthy ways to cope. Your regular provider can often work alongside a psychologist while continuing your usual care.
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Sources
- NHS (UK National Health Service). Health anxiety
- Cleveland Clinic (2024). Illness Anxiety Disorder (Hypochondria)
- MedlinePlus Medical Encyclopedia (U.S. National Library of Medicine, NIH). Illness anxiety disorder
- Centre for Clinical Interventions (CCI), Department of Health, Western Australia (2011). Helping Health Anxiety, Module 1: Understanding Health Anxiety (Anderson, Saulsman & Nathan)
- Centre for Clinical Interventions (CCI), Department of Health, Western Australia (2011). Helping Health Anxiety, Module 6: Reducing Checking and Reassurance Seeking
- Centre for Clinical Interventions (CCI), Department of Health, Western Australia (2011). Helping Health Anxiety, Module 7: Challenging Avoidance and Safety Behaviours
- Centre for Clinical Interventions (CCI), Department of Health, Western Australia (2011). Helping Health Anxiety, Module 9: Healthy Living and Self-Management Planning
- Centre for Clinical Interventions (CCI), Department of Health, Western Australia. Responding to Reassurance-Seeking: How to help someone you care about reduce their reassurance-seeking behaviour
- Current Psychiatry Reviews (peer-reviewed) (2014). Epidemiology of Hypochondriasis and Health Anxiety: Comparison of Different Diagnostic Criteria (Weck F, Richtberg S, Neng JMB), Current Psychiatry Reviews 10(1): 14–23
- Journal of Psychosomatic Research (peer-reviewed) (2011). Prevalence of health anxiety problems in medical clinics (Tyrer P, et al.), Journal of Psychosomatic Research 71(6): 392–394
- Behavioural and Cognitive Psychotherapy (peer-reviewed) (2017). Cognitive Behaviour Therapy for Health Anxiety: A systematic review and meta-analysis (Cooper K, Gregory JD, Walker I, Lambe S, Salkovskis PM), Behavioural and Cognitive Psychotherapy 45(2): 110–123
- The Lancet (peer-reviewed) (2014). Clinical and cost-effectiveness of cognitive behaviour therapy for health anxiety in medical patients: a multicentre randomised controlled trial (Tyrer P, Cooper S, Salkovskis P, et al.), The Lancet 383(9913): 219–225
- Imperial College London (news release on the Lancet trial) (2013). Cognitive behaviour therapy is effective for reducing health anxiety
This guide is for education and self-care. It is not a diagnosis or a substitute for professional care. Please talk to a counselor or clinical provider about your health. Reviewed October 2026.

