Anxiety in children rarely announces itself with the word "worried". It arrives as a stomach ache every school morning, a bedtime that takes 90 minutes, a child who explodes at 5pm after holding it together all day. After 19 years of first appointments with parents, we know the signs of anxiety in children are mostly physical and behavioural long before they are verbal, and that parents usually sense the pattern before anyone names it. Here is what to look for, and what we look at when the worry runs deeper.
Key takeaways
- Anxiety in children usually shows up in the body first: stomach aches, headaches, sleep trouble, appetite swings.
- Anger and meltdowns are common anxiety signs, regularly misread as defiance.
- Social anxiety is more than shyness: watch for avoidance that costs your child things they actually want.
- Talk to your GP when worry starts interfering with school, friendships, sleep or family life.
- Psychology leads anxiety care; the body side (sleep, food, gut) deserves a proper look alongside it.
The physical signs: the body speaks first
Children feel anxiety somatically long before they can name it. The classics we hear in clinic, week after week:
- Stomach aches that cluster around school mornings and ease by mid-morning on a stay-home day. This is not faking: anxious guts genuinely hurt.
- Headaches, nausea and "I feel sick" on Sunday nights.
- Appetite at the extremes: a child who cannot face breakfast, or a child who grazes constantly for comfort.
- Sleep trouble in every flavour: an hour to fall asleep, appearing at your door at 2am, nightmares, needing a parent in the room.
- Toilet changes: urgency, holding on all day at school, more accidents in younger children.
- A racing heart, sweaty hands or shallow breathing before particular events.
A worried body is still a body. When these symptoms persist, your GP should rule out physical causes properly rather than assuming anxiety, because both can be true at once. That is exactly why anxious children deserve a psychological and a physical look, not a choice between the 2.
The behaviour signs: avoidance, reassurance and rage
Avoidance is anxiety's signature move. The drama class quietly dropped, the party invitation that triggers a stomach ache, the homework left in the bag because starting it feels dangerous. Watch the pattern, not the excuse: anxious avoidance always has a plausible cover story, and it slowly shrinks a child's world.
Reassurance-seeking is sneakier. The same question asked 12 different ways, the "are you sure?" loop, the bedtime interrogation about tomorrow's plan. Answering soothes for a few minutes, then the loop restarts, because the problem was never missing information: it is the unbearable feeling of not being certain.
And then there is the rage. A child who holds it together at school all day often releases the pressure at home, on the safest person they know: you. Anger is frequently anxiety wearing armour. If the meltdowns are the loudest thing in your house right now, our page on irritability and emotional dysregulation walks through that overlap, and for the predictable flashpoints (school mornings, bedtime, transitions) a pre-built plan beats improvising: our free calm kit builder assembles age-appropriate regulation activities in about 2 minutes.
Social anxiety in children: more than shyness
Shy children warm up. Socially anxious children organise their lives around avoiding scrutiny, and the difference shows in what it costs them. Signs worth noticing:
- Knowing the answer and never raising a hand.
- Dread before reading aloud, presentations, assembly or sports carnivals.
- Refusing to order their own food, or going silent with shop assistants and relatives.
- Stomach aches timed suspiciously to excursions, camps and birthday parties.
- A friendship circle that keeps narrowing toward 1 safe person, or none.
- Teachers describing a child you barely recognise ("so quiet, no trouble at all") while home gets the after-school fallout.
That last point matters more than most parents realise. The effort of containing anxiety all day is invisible in the classroom and very visible at 5pm, so the school report and the home reality can describe 2 different children. Both reports are accurate. Put together, they are the full picture, which is why we ask about both in every consultation.
When to talk to your GP
Every child worries sometimes. The signal that worry has become something more is persistence plus interference: symptoms running for weeks, and a life starting to bend around them. School mornings becoming negotiations. Sleep broken most nights. Friendships thinning. Family routines quietly redesigned to avoid triggers.
Your GP is the right first stop. They can assess what is going on, rule out physical contributors, and refer your child to a psychologist: cognitive behavioural therapy has the strongest evidence base for childhood anxiety, and it is the core of good care. Going early beats waiting for a crisis, not least because psychology waitlists are real. Asking for help at the "is this normal?" stage is not overreacting; it is when help is easiest to use.
Take notes with you. A fortnight of jotted observations (what happened, where, what time of day) plus a line from the teacher about how school looks makes a 15-minute appointment work much harder, and it spares you trying to summarise 6 months from memory on the spot.
The body side: what we check alongside psychology
While psychology does its work, the body the worry lives in deserves attention too. The triad we examine first with every anxious child is sleep debt, blood sugar rhythm and gut symptoms, because each 1 turns the volume up on the other 2. Then the measurable nutrition: iron, zinc, B12 and vitamin D checked through pathology rather than assumed. Then stress physiology itself, where the history justifies measuring it.
None of that diagnoses anxiety, and we are upfront about that in the first conversation. What it does is describe what your child's body is running on, and hand the whole care team (you, the GP, the psychologist) something concrete to work with. Parents come to us when they have a diagnosis but not an explanation. The body side is often where the explanation starts to fill in, and it is the half of the picture that 19 years of these conversations has taught us never to skip.
Also worth reading
- Exam stress and anxiety in teens: the October pattern our clinic calendar shows every year, and a parent's game plan for it.
- Understanding oppositional defiant disorder: when anger is the headline, this is the other pattern worth knowing about.
If the signs on this page kept sounding like your child, our child anxiety page explains what an investigation actually involves and how it complements psychology, or send an enquiry and tell us what you are seeing. Initial consultations run 60 minutes and start from $242, at Bundoora or by telehealth Australia-wide.
ReMed's care is complementary to, not a replacement for, conventional medical care. We work alongside your GP, paediatrician and specialists, and our support is not a substitute for medical diagnosis or treatment. In an emergency call 000. Every child is different: outcomes vary and no specific result can be guaranteed.