Childhood Anxiety and Depression: Signs to Look For (and the Ones Parents Often Miss)

As a parent, it’s natural to worry about your child’s happiness, but what many parents don’t realise is just how common, and often hidden, anxiety and depression can be in children. In Australia, around one in seven children experience a mental health disorder, with anxiety and depression among the most common, and at any given time, hundreds of thousands of children are struggling, often quietly and without the words to explain how they feel.

Unlike adults, children don’t usually say, “I feel anxious” or “I feel depressed”, instead, their emotions tend to show up through behaviour, physical complaints, or subtle shifts that can easily be dismissed as phases or personality traits. This is especially important when you consider that around half of all mental health conditions begin before the age of 14, meaning the early signs are often present long before a diagnosis is ever made.

The more obvious warning signs

Let’s start with the signs most parents are somewhat familiar with.

Anxiety may look like:

• Constant worrying or overthinking

• Avoiding school, activities, or social situations

• Trouble sleeping or frequent nightmares

• Physical complaints (headaches, stomach aches)

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Depression may look like:

• Persistent sadness or tearfulness

• Loss of interest in things they once enjoyed

• Low energy or fatigue

• Changes in appetite or sleep

These signs matter but they’re not the whole picture.

The less obvious (but high-risk) signs parents often miss

This is where many children slip through the cracks.

1. Irritability instead of sadness

Children often don’t appear “down”, they appear angry, reactive, or easily frustrated. This is one of the most overlooked signs of both anxiety and depression.

2. Perfectionism or fear of failure

A child who:

• Gets upset over small mistakes

• Avoids trying new things

• Needs constant reassurance

  
  

You may think these signs are your child being "driven" but instead they may be experiencing high anxiety.

3. Frequent physical complaints with no clear cause

Ongoing stomach aches, headaches and feeling “sick” before school.

These are often real physical symptoms driven by emotional distress, not attention-seeking.

4. Withdrawal that looks like independence

A child spending more time alone, on screens, or in their room can be mistaken for normal development but it can also signal emotional withdrawal.

Research shows that factors like increased screen time and reduced sleep or physical activity are linked to higher risks of anxiety and depression in children.

5. Changes in behaviour at school

You might hear:

• “They’re distracted”

• “They’re not trying”

• “They’ve become quiet”

In reality, anxiety can make it hard to concentrate, and depression can reduce motivation.

6. Being overly “good” or compliant

Some children internalise everything. They don’t act out, they shut down, people-please, and hide distress, making their struggles even harder to detect.

7. Big reactions to small problems

If your child has:

• Meltdowns over minor issues

• Difficulty coping with change

• Strong emotional reactions

…it may indicate an overwhelmed nervous system, often linked to anxiety.

Risk factors parents should be aware of

While any child can experience anxiety or depression, there are certain risk factors that can increase the likelihood, including neurodevelopmental conditions such as ADHD or autism, exposure to ongoing stress or trauma, bullying, social difficulties, or significant family changes. These factors don’t guarantee a child will struggle, but they do increase vulnerability, making early awareness even more important.

When should you be concerned?

A helpful rule of thumb for parents is to look at duration, intensity, and impact, if a behaviour is continuing for weeks, feels more intense than expected, or is starting to affect your child’s sleep, school, or relationships, it’s worth paying closer attention. Often, parents have an instinct that something isn’t quite right, and it’s important to trust that.

What actually helps (and what doesn’t)

In terms of support, small, consistent actions can make a meaningful difference, creating space for open conversations, gently noticing patterns without judgement, and validating your child’s feelings rather than immediately trying to fix them can help them feel understood and safe. Maintaining predictable routines, encouraging regular sleep, movement, and downtime, and seeking professional support early when needed are all protective steps.

What tends not to help is minimising their experience, saying things like “you’ll be fine” or “others have it worse”, or hoping the issue will simply pass with time, as this can unintentionally shut down communication.

The reassuring news is that children are highly responsive to support, with the right understanding and early intervention, most children can learn to manage anxiety, build resilience, and reconnect with a sense of confidence and wellbeing.

Childhood anxiety and depression don’t always look like sadness or fear, sometimes they show up as anger, perfectionism, physical complaints, or quiet withdrawal, and the more we understand these less obvious signs, the earlier we can step in and support our children in a way that can genuinely change the trajectory of their lives.