Anxiety in Autistic Children: Signs and Support
Anxiety in autistic children often wears a disguise — as anger, avoidance, control, or a stomach ache that has no infection.
Anxiety in autistic children is one of the most common, and most commonly missed, parts of the picture — because it so rarely announces itself as worry. It hides behind behaviour, and the behaviour gets addressed while the anxiety underneath keeps running.
The short answer
Anxiety is significantly more common in autistic children than in their peers, and it frequently presents indirectly — as anger, avoidance, rigidity, control-seeking, or physical symptoms. Recognising anxiety as the driver beneath the behaviour is often the key that unlocks everything else.
Why it is so prevalent
Living in a world that is unpredictable, sensorially intense, and socially demanding — while masking to get through it — is inherently anxiety-producing. Add interoceptive differences, which can make internal signals hard to read, and anxiety often builds unseen until it spills over.
Signs to watch for
- Rigidity, a strong need for control, or distress at change.
- Avoidance of specific places, people, or activities.
- Repetitive questioning or reassurance-seeking.
- Physical complaints — stomach aches, headaches — with no medical cause.
- Anger or meltdowns that are, underneath, fear.
What helps
- Increase predictability and reduce uncertainty wherever you can.
- Lower the demand load and protect recovery time.
- Support sensory needs proactively, before overload.
- Name the feeling for them: ‘Your body feels worried right now.’
- For significant or persistent anxiety, seek a clinician experienced with autistic children.
What the research says
A 2011 meta-analysis by van Steensel and colleagues found that around 39.6% of autistic young people met criteria for at least one anxiety disorder, with specific phobia, obsessive-compulsive disorder, and social anxiety most common. The figure is a reminder that for many autistic children, anxiety is not a side issue — it is close to the centre of the experience.
In South Africa, the SADAG Mental Health Line (011 234 4837) can help families find appropriate support.
Treat the fear, and much of the behaviour quietly resolves itself.
Frequently asked
- How common is anxiety in autistic children?
- Very. A meta-analysis estimated that about 40% of autistic young people meet criteria for at least one anxiety disorder — far higher than in the general child population.
- How does anxiety show up in autistic kids?
- Often not as obvious worry. It can look like anger, avoidance, rigidity, a need for control, repetitive questioning, or physical complaints like stomach aches.
- What helps?
- Predictability, reduced demands, sensory support, and treating anxiety as the driver beneath behaviour. For significant anxiety, a clinician experienced with autistic children can help.
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