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Health & body · 6 min read

Anxiety in children: body signs

The physical symptoms that are often anxiety in disguise — tummy aches, headaches, sleep issues, appetite shifts. How to tell, and what helps.

Reviewed by Dr. Olivia Hart · Child and adolescent psychiatrist (Sydney)Last reviewed 2026-04-19

Childhood anxiety often arrives through the body before it arrives through words. A child who cannot name what they are feeling will still feel it — in their stomach, their head, their sleep. If the doctor cannot find anything, this page is for you.

The body signals worth knowing

  • Recurrent tummy aches, often around the navel, usually worse in the morning before school and settling on weekends.
  • Headaches that come and go, unrelated to hydration or eyesight.
  • Nausea or loss of appetite in specific situations (before school, before sleep, before a specific event).
  • Difficulty falling asleep — lying awake with racing thoughts; 'I can't sleep' without a named reason.
  • Frequent waking or early-morning rising.
  • Needing to pass urine frequently without a urinary tract infection.
  • Chest tightness or shortness of breath with no respiratory illness.
  • A marked change in energy — either withdrawal or agitation.

Why the body shows anxiety first

The autonomic nervous system and the gut-brain axis are tightly linked. When a child's threat system activates, their gut is one of the first places the shift shows up. The child feels a real, physical pain — it is not made up, it is not attention-seeking, it is the physical expression of a brain state they do not yet have the vocabulary to name.

How to tell whether it is anxiety — and not something medical

The first step is always a medical review. Recurrent tummy aches, headaches, or other symptoms always warrant a GP visit to rule out physical causes.

Once a medical cause has been reasonably ruled out, the pattern to look for is situational. A tummy ache that appears on Sunday evening and Monday morning but is absent on Saturday is telling you something about Mondays. A headache that appears before a test and settles after is telling you something about tests.

Listen for what comes up around the body-state. Not 'what's wrong with your tummy' — you already know. 'What's on your mind today?' 'Anything you're not looking forward to?'

What helps

  1. Validate the physical feeling. 'Your tummy really hurts. That's hard.' Do not argue with the sensation.
  2. Name the possibility. 'Sometimes our tummy aches when we have big feelings. Is there anything your tummy might be worried about today?' Gentle, not forced.
  3. Hold the line on the thing being avoided — usually school. Staying home creates a short-term relief that strengthens the avoidance pattern.
  4. Build a small predictable morning routine. Anxiety hates novelty; structure is calming.
  5. Teach the body a regulating skill — three long exhales, a hand on the belly, a minute of cold water on the wrists. These are evidence-based, not wellness trinkets.

When to seek a psychologist

  • Symptoms are recurrent over more than a month.
  • School attendance is being affected.
  • The child cannot name what they are worried about, but the body is clearly activated.
  • You have tried the steady steady steady approach and the pattern is not easing.
  • Your instinct is that something specific is going on and the child cannot say what.

In Australia, a GP Mental Health Care Plan unlocks up to ten subsidised psychology sessions a year. CBT — cognitive behavioural therapy — is the evidence-based first-line treatment for childhood anxiety. It works. Do not wait six months to access it because it sounds clinical.

Parents also ask

Questions we hear a lot.

Should I keep them home if they're in pain?

If you have seen this pattern before and it reliably resolves on weekends or holidays, the guidance is usually to go to school — gently, with the pain acknowledged. Keeping a child home cements the avoidance. Acknowledge the body. Hold the line. Talk about what might be underneath, later in the day.

What is CBT?

Cognitive behavioural therapy. Structured, time-limited, evidence-based therapy that teaches a child to notice their thoughts, recognise anxiety's shape, and build practical tools to respond. For children, it usually involves play, drawing, and family sessions. Not a long-term therapy — 10–16 sessions typically produces meaningful change.

Written by Seen Editorial · Editorial board

Reviewed by Dr. Olivia Hart · Child and adolescent psychiatrist (Sydney)

Last reviewed 2026-04-19. Reviewed annually or sooner if Australian guidance changes.

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