Aggression

Hitting, kicking, biting, or throwing directed at others.

Educational suggestions only — not individualized medical or behavioral advice. Every autistic person is different. Use as a starting point, and involve a trusted professional when things feel beyond what you can support alone.

Action panel

What can I do today?

Small, doable steps for right now, this week, and when to bring in a professional. Educational only — not individualized medical or behavioral advice.

Step 1

In the next 10 minutes

Pause and take three slow breaths together — regulate yourself first.
Reduce sensory load: lower lights, turn off background noise, offer quiet space.
Drop non-essential demands for the next few minutes. Safety and connection first.
Offer a preferred item or activity, or a familiar comfort routine.
Use fewer words. Try a visual, gesture, or written cue instead of talking through it.

Step 2

This week

Track what happens before, during, and after for 3–5 days (ABC notes).
Look for patterns in sleep, hunger, sensory input, and transitions.
Test one small environmental change (lighting, timing, warning before switches).
Introduce or review a visual schedule for the parts of day that are hardest.
Plan a 15-minute connection time daily, without demands, to fill the tank.

Step 3

Questions to ask a professional

BCBA or behavior specialist

What might this behavior be communicating, and what function does the data suggest?
What antecedent changes and replacement skills would you prioritize first?
How will we measure progress, and how often will we review the plan together?

Step 4

Helpful printables

Step 5

When to seek urgent help

Any injury to the person or others, or damage that puts safety at risk.
New or worsening self-injury, especially to head, eyes, or with objects.
Signs of dehydration, fainting, extreme lethargy, or a very high fever.
Sudden loss of skills, seizures, or a large change in alertness.
Suicidal statements, plans, or intent — or a mental health crisis.
You feel unsafe or unable to keep the person safe by yourself.

In the US, call or text 988 for mental health crisis, 911 for medical emergencies, or Poison Control at 1-800-222-1222. Outside the US, use your local emergency number. This page is educational — it is not a diagnosis or a treatment plan.

Possible reasons

Communication overwhelm — no words available for a big feeling.
Pain: headache, ear infection, dental pain, GI cramping.
Sensory overload that crossed threshold minutes before the incident.
Escape from a demand that feels impossible in that moment.
Transition or unexpected change in routine.
Fatigue, hunger, or thirst that hasn't been named yet.

Questions to consider

1What happened in the 10 minutes before? (Antecedent)
2What happened right after? (Did the demand stop? Did they get attention?)
3Any patterns by time of day, person, or setting?
4Any recent illness, medication change, or poor sleep?
5How was communication going before it escalated?

What to try first

Keep everyone safe first — create space, remove hazards.
Match energy down: quiet voice, fewer words, slow movement.
Do not lecture, argue, or issue new demands during escalation.
After: log the ABCs (Antecedent, Behavior, Consequence).

Evidence-supported strategies

SEAT function analysis

Identify whether the behavior gets Sensory, Escape, Attention, or Tangible — supports differ by function.

Communication replacement

Teach a functional way to ask for a break, help, or the item — AAC, cards, signs, or a scripted phrase.

Antecedent supports

Prevent by adjusting the situation: reduce demand, add warning, offer choice, lower sensory load.

Co-regulation plan

Written plan for adults: what to do at green / yellow / red. Consistency across caregivers matters most.

Printable resources

Related behaviors

aggression

Related strategies

Videos

Videos open a YouTube search — we recommend previewing before sharing with your family.

When to seek professional help

Aggression is escalating in frequency, intensity, or duration.
Safety of the person or others is regularly at risk.
You cannot identify a pattern after 1–2 weeks of ABC logging.
Consider: pediatrician (medical rule-outs), BCBA (assent-based), OT (sensory), SLP (communication).

When immediate medical attention is appropriate

Serious injury to self or others — call your local crisis or emergency line.
Head injury with loss of consciousness, vomiting, or confusion — emergency care.
Suicidal statements or intent — call/text a crisis line (US: 988) or emergency services.

In the US: call or text 988 for mental health crisis. Call 911 for medical emergencies. Poison Control: 1-800-222-1222. Outside the US, use your local emergency number.

Other situations

Won't Sleep

Bedtime resistance, night waking, and long sleep-onset.

Won't Eat

Food refusal, extreme selectivity, or shrinking food list.

Meltdowns

Nervous-system overload — not tantrums, not misbehavior.

Public Outings

Restaurants, parks, birthday parties, family events.