Before you accept that this is just autism, ask what hurts
Head-banging, hitting, and biting are often driven by pain, sensory overload, or unmet needs nobody has looked for. Rule out physical causes before a behaviour plan becomes the only story.
The short answer
- Self-injury and aggression are strongly associated with gut problems, sensory sensitivity, poor sleep, and anxiety — not only with ‘behaviour for attention.’
- Behaviour is communication. Ask what it achieves or signals, never what the child is doing to you.
- Ask for a physical workup in writing before any behaviour plan is written as the primary response.
- Track patterns for a week when the child cannot say where it hurts: time of day, meals, rooms, clothing, after school.
Under 5
Ages 0–4- Ears, teething, reflux, constipation, and ear infections are frequent silent drivers.
- Action: pediatric visit with the ten-question list; stool and sleep log for one week.
Changes when you change the age at the top of the page.
Early school age
Ages 5–8- Dental pain and constipation after holding all day at school are common and missed.
- Action: dental check with accommodations; school toilet access; after-school pattern notes.
Changes when you change the age at the top of the page.
Later primary
Ages 9–12- Headaches, migraines, and menstrual pain (for some) begin to matter. Anxiety can amplify pain expression.
- Action: ask specifically about head, abdomen, periods; do not accept ‘behavioural’ as the first and only label.
Changes when you change the age at the top of the page.
Teenagers
Ages 13–16- Distinguish regulation-related self-injury from suicidal self-harm — both need serious response, different pathways.
- Action: calm safety check; medical review; mental health support if mood is involved — see teen mental health.
Changes when you change the age at the top of the page.
Kaat et al. comparison cohort, ages 5–10. Gut problems are frequently silent and show up as behaviour.
The ten-question list
Ask about each specifically — a general “are you in pain?” often gets a no even when something hurts:
- Ears
- Teeth / jaw
- Gut / constipation / reflux
- Sleep quality
- Skin / eczema / infection
- Headaches
- Urinary pain
- Menstrual pain (when relevant)
- Injury or limp
- New medication side effects
Dental pain is among the most under-checked, and children who cannot tolerate an exam are exactly the ones whose pain goes unfound. Ask for dental care with accommodations — see medical appointments.
Why “just autism” is a dangerous first answer
Autism can involve different pain expression and sensory processing. That does not mean injury, hitting, or head-banging should skip a medical look. Sudden change in behaviour is a clinical clue.
Gut problems are more common and often “silent” — they show up as behaviour. See gut.
Self-injury as communication
Head-banging, biting, hitting self or others can signal:
- Pain
- Sensory overload or need for input
- Escape from an unbearable demand
- Communication breakdown
- Exhaustion after masking all day
The question is what it achieves or signals, not how to punish it out of existence. Safer sensory alternatives and environment change beat extinction-only plans — see sensory and meltdown.
Pattern log (one week)
| Time | What happened | Before (food/sleep/school) | After | Suspected trigger |
|---|---|---|---|---|
Bring the log to the doctor. Patterns beat guesswork.
What to say at the appointment
“The behaviour changed in the last six weeks. I want physical causes ruled out before we write a behaviour plan as the main response.”
That sentence reorders many visits. Ask for findings and next steps in writing.
When it is not (only) pain
Sometimes the driver is sensory load, a demand that became unbearable, a schedule change, anxiety, or sleep debt. Those are findable by watching and by school/home data — still start with medical red flags when change is sudden.
Seizures or lost skills need urgent medical attention — see seizures.
Safety while you investigate
- Soften corners / supervise during high-risk moments
- Do not leave a head-banging child alone mid-episode if injury risk is high
- For teens, ask directly about wanting to die or hurt themselves; crisis paths are on teen mental health
- Adult regulation first — your calm is part of the intervention
Same-day vs routine care
Seek urgent/emergency care for head injury, suspected fracture, inability to walk, breathing trouble, testicular pain, severe abdominal pain with vomiting, or suicidal self-harm.
Same-week medical review for new head-banging, biting that breaks skin, or behaviour change over days to weeks without explanation.
Write the change in one sentence for the triage nurse.
Working with school on pain-driven behaviour
Ask that behaviour plans wait until medical questions are addressed when onset is sudden. Share the pain log. Request nurse check-ins if headaches or stomach pain are reported.
Parent trap to avoid
Starting a restrictive behaviour programme the same week behaviour spiked without a medical look.
Questions parents ask after reading this
Use these with your co-parent, teacher, or clinician so the next conversation is concrete.
- What is the single highest-yield change we can make in the next seven days based on this page?
- What should we stop doing that is adding load without helping?
- Who else needs a one-page summary of this plan (school, caregiver, relative)?
- What would “a little better” look like in two weeks so we know the plan is working?
Write the answers down. Plans that live only in your head disappear on hard days.
If you only do three things
- Pick one action from this article and schedule it on the calendar (call, email, or routine change).
- Tell one other adult the plan in one sentence so you are not carrying it alone.
- Revisit this page after two weeks and note what changed — keep, adjust, or drop.
Small completed steps beat perfect unread plans. You are allowed to go slowly and still be a good parent.
Related
Meltdown · Gut · Sleep · Sensory · Medical appointments
Questions parents ask
Where this comes from
- Kaat et al., gastrointestinal problems in autistic children ages 5–10.
- AAP clinical guidance on evaluating behaviour change in children with developmental disabilities.
- Clinical literature linking pain, sleep disruption, and self-injury in autistic populations (general themes).
This is health information, not medical advice. It cannot replace a conversation with your child's doctor.