If your autistic or ADHD child is hurting themselves: what actually helps

An evidence-based guide for parents & carers responding to self-harm

If your child has seriously injured themselves, or you think they might have, and you need help right now: call 999 or go to A&E. If you've found out your child is hurting themselves and you're trying to understand what to do next, this guide is for you.

Finding out your child is self-harming can be one of the most frightening experiences as a parent and carer. This guide brings together what the evidence says about why neurodivergent young people self-harm, how to respond in ways that help rather than shut down conversation, and how to get professional support that actually fits your child.

Start here: this is more common than you have probably been told

Self-harm is substantially more common among autistic young people and those with ADHD than among their peers. Around a quarter of autistic people without a learning disability self-harm, compared with an estimated 5–17% in the general population. Adolescents with ADHD have roughly twice the odds of self-injury; among young people presenting to emergency departments, the estimated risk is around four times higher.

The starkest figure comes from a UK paediatric emergency department: of children aged 8–16 arriving in suicidal crisis, around a third were autistic, against 1–2% of the general population.

They arrived younger than their non-autistic peers, and were more likely to come back again.

Two things follow from this, and both matter.

This is not a reflection of your parenting. Higher rates of self-harm in this group are driven by things happening around neurodivergent children. Environments that don't fit, needs that go unmet, support that arrives late. Not by anything you did or failed to do.

Self-harm often isn't about wanting to die — and still needs taking seriously

For many young people, self-harm is a way of coping with feelings that seem too big to manage any other way: a release, a way to feel something, or a way to regain a sense of control. It can also be a way of communicating a need for support. It is not always connected to wanting to end their life.

Holding that alongside the need to take self-harm seriously can be difficult, but both are true. For neurodivergent children, it’s especially important not to let the first point become false reassurance: autistic young people are over-represented among those presenting in suicidal crisis, and self-harm is a recognised risk factor for later suicide attempts. Taking self-harm seriously and treating it as a suicide crisis are different things. This guide will help you tell them apart.

A note on "self-harm" versus "self-injurious behaviour"

If your child is autistic, you may have encountered the idea that head-banging, hitting or biting in autistic children is a separate phenomenon — "self-injurious behaviour", a sensory or behavioural thing, distinct from the "self-harm" that comes up in teenage mental health.

That line is less clear than it looks. Research comparing the two has found little difference in the forms it takes, the age it starts, or the reasons behind it. The distinction can do real harm when it becomes a reason not to assess a child, or to route them to a behaviour service rather than a mental health one.

The more useful question isn’t which category your child’s behaviour fits into. It’s what need the behaviour is meeting, and what might meet that need more safely. A professional who knows your child can help you work that out.

What might be driving it

Understanding the function of the behaviour is especially important here, because the drivers may differ from those for neurotypical young people, and the right support depends on which is at play. Common functions include:

Sensory

Sensory differences are among the strongest predictors of self-harm in autistic people. It can be a way to block out overwhelming sensory input, or to generate input a child is seeking. 

Pain is a particular blind spot: unidentified toothache, ear infection, constipation, reflux or period pain can drive self-injury, especially in children who find it hard to locate or describe physical sensations. 

A physical health check is a reasonable early step, not a dismissive one.

Communication

For children who are minimally verbal or lose speech under stress, self-harm may be the most reliable way to communicate that something is too much, that they need to leave, or that something hurts. It may also be the signal adults respond to most consistently.

Not being able to name the feeling

Many autistic people experience alexithymia — difficulty identifying and describing their own emotions. If your child can’t tell you what they’re feeling, “use your words instead” may not be something they can do, and “why did you do it?” may be genuinely difficult to answer rather than something they’re avoiding.

Masking and burnout

Children who hold themselves together all day at school often release it at home. If your child seems fine to teachers and falls apart the moment they walk through the door, that gap is information, not inconsistency. Sustained masking is linked to poorer mental health, and prolonged burnout can precede a sharp escalation.

Impulsivity and emotional intensity

For young people with ADHD in particular, self-harm may be less planned and more immediate, with little time between an intense feeling and acting on it. This can change what helps: reducing access to means and making it easier to reach a trusted person may matter more in the moment than conversations aimed at building insight.

Change, uncertainty, and loss of control 

A changed routine, a supply teacher, a cancelled plan, a transition between schools. What looks like an overreaction from the outside may reflect the build-up of many such changes.

Low mood

Depression is a strong predictor in both groups, but it is often missed in neurodivergent young people because flat affect, withdrawal or irritability may be attributed to autism or ADHD instead.

Often, more than one of these factors is involved, and the mix can change over time.

Noticing the signs of self-harm

The general signs still apply: unexplained marks or injuries, wearing more clothing than the weather calls for, blood on clothing or bedding, spending long periods alone, and becoming withdrawn, low in mood or irritable.

Some things are specific to this group:

• Masking makes it harder to spot. A child who is skilled at appearing fine may be very skilled at concealing this too, and the "she seems fine at school" report may be actively misleading.

• A change in stimming. Whether it becomes more intense or forceful, or shifts from something neutral to something that leaves a mark. The question is whether it has changed, not whether it looks unusual

• Escalation during or after burnout, or in the weeks following a change your child found difficult.

• Regression, such as losing skills, speech or independence they previously had.

None of these confirms anything on its own. A pattern is worth following up gently.

Responding in the moment

Try to stay as calm as you can. That’s genuinely hard, but especially important here: if your child senses your distress, they may shift to managing your feelings rather than expressing their own.

Thank them for telling you, or acknowledge that it may have been hard to let you find out. Let them know you’re glad you know. Try not to centre the conversation on the injuries; focus instead on how they’ve been feeling and what they might be trying to communicate.

Adjusting how you have the conversation

This is where neurodivergence can make the biggest practical difference. Standard advice, such as sitting down together, making eye contact and talking things through, may make the conversation harder for your child, not easier.

Drop the eye contact requirement. Many autistic people find it harder to think while making eye contact. Talk side-by-side, in the car, on a walk, while doing something with your hands.

Offer a written route. Text, notes, messaging apps. Some children can write things they cannot say out loud, and a text conversation from the next room is a real conversation.

Allow processing time. A long pause is often processing, not refusal. Ask, then wait longer than feels natural. You could also let them know you’ll come back to the question later.

Ask more specific questions. “Why did you do it?” may be unanswerable. Questions like “Was it loud?”, “Was it about school?” or “Was it more like too much feeling or not enough?” give your child something more concrete to respond to. Scales, choices and yes/no questions may work better than open-ended ones.

Reduce sensory load first. Dim the lights, turn off the TV and choose somewhere familiar. A calmer environment may make it easier to talk.

Be specific about what happens next. Vagueness can be frightening. “I’m going to call the GP tomorrow morning and ask for an appointment. You don’t have to speak during it if you don’t want to” may be more reassuring than “We’ll sort this out.”

What tends to help

• “Thank you for telling me. I'm not angry, I want to understand.”

• “This sounds like it's been really hard to carry on your own.”

• "You don't have to explain it right now. We can work it out together."

• "We'll get through this together, and I'll help you find the right support."

You don't need to understand exactly why it's happening before you can help. Staying calm and curious keeps the door open.

Responses that can make it harder for your child to open up

• Demanding to see injuries or repeatedly asking how they happened or what was used

• Treating it as attention-seeking or manipulative, including the specifically neurodivergent version of this, dismissing it as "just a sensory thing" or "just her autism"

• Using ultimatums or punishment (“If you do this again…”)

• Insisting on eye contact or an immediate verbal explanation

• Reacting with panic in a way that makes your child feel they need to protect you from how they’re feeling

If you’ve already reacted in one of these ways, you’re not alone, and it doesn’t mean the relationship is beyond repair. You can come back to the conversation and say, “I didn’t handle that well. I’m here, and I want to understand.”

A note on “safer” self-harm

Some parents look for ways to help their child reduce physical harm while they’re working through this. That instinct is understandable, and in some circumstances it can form part of professional care. But it needs to be considered with a clinician who knows your child, rather than guided by general advice like this. 

We haven’t included specific techniques here because what is genuinely safer varies greatly from person and situation, and the wrong approach could cause real harm. If this is something you’re weighing up, speak to your GP or CAMHS.

Getting your child assessed — every time, even if the injury looks minor

Professional guidance recommends an assessment after every episode of self-harm, even when the physical injury seems minor. The aim isn’t just to assess the wound, but to understand what’s behind it and put the right support in place.

For neurodivergent children, there’s another reason to push for assessment: diagnostic overshadowing. This is when a professional attributes distress to autism or ADHD instead of recognising a mental health difficulty in its own right, perhaps calling it “part of autism”, “sensory” or “behavioural”. Parents and carers often report this as a barrier to getting help, and it can leave autistic young people without the support they need before they reach crisis.

Your child's neurodivergence is the context for their distress. It is not an explanation for it, and it is not a reason to withhold assessmen

Knowing what kind of help you need

Emergency. Act now.

If the injury is serious, or you believe your child's life is at risk: call 999 or go to A&E.

If you have any warning, prepare for A&E. Emergency departments can be especially difficult sensory environments: bright, loud and unpredictable, with long waits and repeated questions from strangers. A bag with ear defenders, sunglasses, a comfort item, a charger and a snack may help. Tell reception and triage that your child is autistic or has ADHD, and ask what adjustments are available, such as a quieter space, one point of contact or clearer information about waiting times. Bring written notes too: your child may find it hard to speak in that environment, even if they usually can.

Urgent, but not an emergency

If you’re worried, need advice quickly, or aren’t sure how serious the injury is, call NHS 111 and select the mental health option.

Ongoing assessment and support

For other concerns, start with your GP. They can refer your child to CAMHS (Child and Adolescent Mental Health Services) or other local mental health services for a full assessment. Ask explicitly for a mental health referral rather than a behaviour or autism-service referral, if a mental health assessment is what your child needs.

Supporting recovery over time

Recovery is rarely a straight line, and a setback doesn’t necessarily mean things are getting worse overall or that you’ve done something wrong. For neurodivergent young people, setbacks may coincide with environmental pressures, such as a new term, a timetable change, exams or a change in staff. Looking ahead to these changes can help you plan support before they happen.

Keep checking in gently and regularly, rather than treating it as a conversation you’ve already had. Use whatever way of communicating works for your child; a text on a difficult evening counts. Notice small steps forward, and keep the relationship warm and the door open. Your steady, non-judgemental presence is one of the most protective things in your child's life right now.

Look after yourself too

Discovering your child is self-harming can bring up shock, guilt, fear, or grief of your own. If you've been fighting for support for years, it may also bring anger, and that's legitimate. Many parents of neurodivergent children are running close to empty before this starts, and you will be more able to support your child if you aren't.

Talk to someone you trust, or use one of the contacts below — they're there for you as much as for your child. If you're neurodivergent yourself, as many parents of neurodivergent children are, your own sensory and processing needs are part of this too.

Where to get help

Need	Contact
Life at immediate risk / serious injury	999 or A&E
Urgent mental health advice	NHS 111 — choose the mental health option
Parenting advice & signposting	YoungMinds Parents Helpline: 0808 802 5544 (Mon, Thu, Fri 9.30am–4pm; Tue, Wed 9.30am–6pm), webchat, or parents@youngminds.org.uk
Emotional support from another parent of an autistic child	National Autistic Society Parent to Parent — callback service, request via autism.org.uk
Autism-specific advice and guidance	National Autistic Society: autism.org.uk
ADHD information and local support groups	ADHD UK, ADHD Foundation
Someone to talk to, any time	Samaritans: 116 123
Crisis text support, 24/7	Shout: text SHOUT to 85258
Support for your child directly (under 19)	Childline: 0800 1111
Assessment & ongoing support	Your GP → CAMHS or other mental health service referral
Support with school provision	IPSEA, SOS!SEN, or your local SENDIASS service

This guide is written to support you in getting help — it is not a substitute for assessment by a qualified professional, and it deliberately contains no detail about methods or means of harm.

Evidence basis: NICE NG225; Cochrane review of interventions for self-harm in children and adolescents (Witt et al. 2021); National Confidential Inquiry into Suicide and Safety in Mental Health (NCISH); YoungMinds guidance. Neurodivergence-specific sources requiring addition to the SAF-POL-003 citation table: Licence et al. (2019), Prevalence and Risk-Markers of Self-Harm in Autistic Children and Adults, Journal of Autism and Developmental Disorders; BMC Medicine (2022), retrospective cohort of 113,286 UK young people; Rodgers, Cassidy et al. (2024), Autism Adapted Safety Plans pilot RCT, eClinicalMedicine, NIHR PHR 129196 — note published corrigendum; UK paediatric emergency department study of autistic young people in suicidal crisis (2026); parent-experience study of CAMHS access for autistic children (2025); ACAMH parent guidance on self-harm and self-injury in autism; ADHD self-injury meta-analysis.