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A twelve-year-old girl sitting at a sunlit kitchen table looking worried while her mother listens beside her

The Child Who Thinks Something Is Wrong With Them

Health anxiety in children looks like headaches, heartbeats and endless questions. Underneath, it is a search for certainty.

Written by Sian Trombley · BEd, MACP, CCC

Clinically reviewedLast reviewed 31 July 2026
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Some children come to the kitchen every morning with a symptom. A headache that might be something serious. A heartbeat that feels wrong. A mark on the skin that was not there yesterday. Parents answer, carefully, kindly, and often accurately — and by dinner the question is back in a new form.

This is health anxiety, and it is one of the most exhausting forms of childhood worry to live alongside. It is also widely misread. The child is not attention-seeking or making it up. They genuinely feel the sensations they describe, and they genuinely believe those sensations mean danger.

How the loop works

  1. 01
    A sensation appears

    Bodies are noisy. Twinges, flutters and aches happen to everyone, all day long.

  2. 02
    It is interpreted as threat

    'My chest feels tight' becomes 'something is wrong with my heart'.

  3. 03
    Anxiety amplifies the body

    Fear speeds the heart, tightens the chest, and produces exactly the sensations being feared.

  4. 04
    Checking and asking begin

    Pulse-taking, mirror checks, searching online, asking a parent for the fifth time.

  5. 05
    Relief arrives — briefly

    The worry quietens for a short while, and the brain learns that the checking was what kept them safe.

What actually helps

Get one thorough medical assessment. Once. Then treat the anxiety, not the symptom. From that point, the work is to reduce the behaviours that keep the fear alive and to build tolerance for not knowing for sure.

When there is a real medical history

Health anxiety often follows something real: an illness in the family, a hospital stay, a frightening piece of news. Acknowledge that origin openly. 'It makes sense that your brain got watchful after Grandad was ill' is far more useful than pretending the fear came from nowhere.

When to seek professional support

Seek help if the worry is interfering with school, sleep or friendships, if your child is avoiding activities in case they get ill, or if the checking has become ritualised. Health anxiety responds well to CBT, and earlier treatment prevents years of avoidance.

Children do not need a perfect parent. They need a predictable one who returns after hard moments.

Sian Trombley, Canadian Certified Counsellor

What you can try this week

Step 01

Cap the questions

Agree a kind limit: one worry question per day, answered once. Beyond that, respond with warmth rather than facts — 'That sounds like the worry again. I love you.'

Step 02

Stop the checking together

No pulse-taking, no mirror inspections, no symptom searching. Replace each urge with a two-minute delay and a distracting activity.

Step 03

Practise living with 'maybe'

Teach the phrase 'It probably isn't, and I can cope either way.' Certainty is not available to anyone; comfort with uncertainty is trainable.

Key takeaways
  • Health anxiety is a certainty problem, not an information problem.
  • Reassurance relieves for minutes and strengthens the loop.
  • Body checking makes ordinary sensations feel abnormal.
  • Rule out medical causes once, properly, then stop re-testing.
  • The goal is tolerating uncertainty, not proving nothing is wrong.
Reflection
  1. How many times a day am I answering the same question?

  2. Have we had one thorough medical opinion, or several partial ones?

  3. What does my child do to feel safe — and is it working for longer than an hour?

Printable resources

Recommended Thrive courses

Sian Trombley, BEd, MACP, CCC
Written by

Sian Trombley

Canadian Certified Counsellor · Founder of Thrive Family Co.

About Sian

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