Why Does My Autistic Child Hit Himself In The Head

If you’ve ever found yourself thinking, why does my autistic child hit himself in the head? you are not alone… and I know how hard and emotional that question can feel.

Because this one hits differently.

It’s not just confusing, it’s worrying. It can feel scary to watch, and you might be thinking:

• Are they in pain?
• Are they trying to hurt themselves?
• How do I stop this?

So let’s slow this down and look at it through the right lens. Because I know when I first started my journey working within special education.. This was something that I found the most worrying.. And even to this day when I meet with parents.. It’s still the number one worry that many have.

First… This is Communication

I know you’re probably sick of me saying this over and over. And I’m sure you come to my blog post looking for answers and think that I’m just palming you off with communication again. But I’m not kidding. Behavior is communication. And even self-harming is a mode of communication.

It is not bad behavior. Your child is not purposely trying to be difficult and it’s really not something that they are just randomly doing for no reason.

This is something that your child is communicating because they can’t yet express it in another way.

In behavior terms, this is about understanding the function of behavior. And this is where we look at why a behavior is happening, not just what it looks like.

Because every behavior has a function.

So… Why does my autistic child hit himself in the head?

There isn’t one single reason. This behavior can serve different functions depending on the child, the environment, and what’s happening in that moment.

So, let’s break down some of the most common ones.

1. Communication Frustration

This is one of the biggest and most common reasons that I see. If your child is struggling to communicate, whether that’s verbal or non-verbal, frustration can build quickly.

Imagine:

• Wanting something but not being able to ask
• Trying to explain something and not being understood
• Being told “no” without having the language to respond

That frustration has to go somewhere…. And sometimes, it comes out physically.

For example: Head hitting becomes a way of saying: “I’m overwhelmed” or “I need help” or “I don’t know how to tell you”

2. Sensory Processing Needs

Many autistic children experience differences in sensory processing. And sometimes, hitting the head can actually be linked to sensory input.

This can go two ways:

Sensory seeking:

• The impact provides strong input
• It can feel grounding
• It gives feedback to the body

Sensory overload:

• The brain is overwhelmed
• The body needs a release
• Hitting becomes a way to cope

It might not look like regulation, but often, it is.

3. Emotional Overload

Big feelings and limited ways to process them = overload.

This can include:

• Anger
• Anxiety
• Frustration
• Excitement that becomes too intense

When the nervous system is overwhelmed, the body goes into survival mode. And in that moment, it is really important to remember that your child isn’t choosing behavior. Their body is reacting.

4. Pain or Discomfort

This is a really important one to consider.

Sometimes, head hitting can be linked to physical discomfort, such as:

• Headaches
• Ear infections
• Tooth pain
• Sinus pressure

If the behavior appears suddenly or increases, it’s always worth ruling this out. Because if something hurts, and your child can’t tell you… They’ll show you.

5. Demand Avoidance

For some children, especially those with profiles like Pathological Demand Avoidance (PDA), demands can feel overwhelming.

If a situation feels:

• Too pressured
• Too demanding
• Too out of control

You might see head hitting as a response to try and escape from that feeling.

6. Seeking Control

When everything feels unpredictable, children look for ways to regain control.

Head hitting can sometimes:

• Stop a demand
• Change the situation
• Get a predictable response

Again, this is not manipulation… just regulation.

7. Learned Response

If a behavior works, it gets repeated.

For example, if head hitting leads to:

• Immediate attention
• Removal from a situation
• Access to something preferred

The brain learns this works. This doesn’t mean the behavior is “attention-seeking” in a negative way. It means it’s effective.

8. Repetitive or Self-Stimulatory Behavior

Sometimes, head hitting can be part of repetitive patterns linked to autism. This connects to Self-stimulatory behavior (often called “stimming”).

For some children, it may:

• Provide sensory input
• Feel rhythmic or regulating
• Be part of a pattern

Should I Be Worried?

Let’s be honest here. Because this behavior involves potential harm, it’s something we do take seriously.

You should seek support if:

• It’s frequent or intense
• There is risk of injury
• It’s increasing over time
• You’re unsure what’s triggering it

This might include:

• A paediatrician
• An occupational therapist
• A psychologist or behavior specialist

What Can You Actually DO?

Here’s the key:

• We don’t just try to stop the behavior
• We understand the function and support the need

1. Look For The Trigger (the “why”)

Ask yourself:

• What happened just before?
• Was there a demand?
• Was it noisy or busy?
• Was your child trying to communicate something?

This is called the antecedent. And it’s where your answers are.

2. Teach Alternative Communication

If the behavior is communication, we need to give your child a better way.

This could include:

• Visual supports
• Choice boards
• Signs or gestures
• AAC devices

Even something as simple as: a ‘help’ or ‘break’ card can reduce frustration massively.

3. Meet Sensory Needs Safely

If your child is seeking input, we don’t remove it… we redirect it.

Try:

• Deep pressure (hugs, cushions, weighted items)
• Pushing/pulling activities
• Sensory toys
• Movement breaks

We’re giving the same input… just in a safer way.

4. Support Regulation Before Crisis Point

Prevention is everything.

Look for early signs:

• Tension in the body
• Increased movement
• Vocal changes

And step in before it escalates.

5. Reduce Demands During Overwhelm

If your child is already overwhelmed, adding more demands will escalate things.

In those moments I want you to focus on;

• Lowering expectations
• Giving space
• Focusing on calm, not compliance

6. Keep Your Response Calm & Consistent

I know this is hard. Really hard. But big reactions can sometimes reinforce the behavior.

Instead:

• Stay calm
• Keep your voice neutral
• Focus on safety

7. Protect Without Panic

If there’s a risk of injury:

• Gently block where possible
• Use soft surfaces
• Guide hands away safely

Safety always comes first.

Seeing your child hit themselves is tough. There’s no way around that.

But here’s what I want you to hold onto:

• Your child is not trying to hurt themselves
• They are trying to cope with something they can’t yet manage another way

You’re not alone in this. And you’re already doing the most important thing by trying to understand your child.

If you found this blog post helpful, please consider sharing it with your friends and colleagues on social media, it helps more teachers find support, and it means the world to me and my little family too.

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Nikki