AuDHD — the term used by many in the neurodivergent community to describe being both autistic and having ADHD — is more common than many people realise. Research suggests that 50 to 70 percent of autistic people also meet criteria for ADHD, and a significant proportion of children with ADHD are also autistic.

When autism and ADHD co-occur, the combination creates a

particular kind of nervous system experience — one that is neither purely autistic nor purely ADHD, but something distinct. This shows up nowhere more clearly than at bedtime.

If your child has AuDHD and sleep is a consistent battle, this post is for you.

Autism and ADHD each affect sleep in their own ways. When they occur together, these effects don't simply add — they interact. The result is often a sleep picture that is more complex and more resistant to standard approaches than either condition alone.

From the autism side:

Melatonin production is frequently delayed, meaning biological readiness for sleep arrives later than expected. Sensory sensitivities can make the sleep environment genuinely difficult to settle in. Transitions — including the transition to sleep — are often activating. Anxiety is common and intensifies in the quiet of the night.

From the ADHD side:

The ADHD nervous system resists stopping. The brain that struggled to focus on demand during the day may become highly active when external stimulation drops away. Racing thoughts, ideas, and memories flood in. The biological circadian rhythm is often delayed, with natural sleepiness arriving significantly later than expected. Sensory-seeking behaviour can increase at bedtime as the body looks for input to replace the stimulation of the day.

When both are present:

An AuDHD child may experience both the sensory hypersensitivity that makes the bedroom uncomfortable AND the sensory seeking that makes lying still feel impossible. They may have the autistic need for predictability AND the ADHD resistance to stopping an enjoyable activity. They may experience the autistic transition anxiety around sleep AND the ADHD second wind that arrives just when everyone else is winding down.

Add to this the regulatory cost of spending a day managing both sets of neurological differences — often while masking or compensating at school — and it becomes clear why the AuDHD nervous system arrives at bedtime in a particularly depleted and dysregulated state.

Every AuDHD child is different, but some patterns come up consistently:

• A very late natural sleep window — genuine tiredness arriving at 10pm or later, regardless of what time bedtime is set.

• Intense resistance to the transition from whatever they're doing to the bedtime process — often escalating quickly from reluctance to full dysregulation.

• A hyperactive, "wired" presentation in the evening that seems disconnected from daytime tiredness.

• Difficulty settling in the bedroom — body that won't stop moving, mind that won't stop running.

• Needing significant parental presence to fall asleep, and waking frequently during the night.

• High sensitivity to the sensory environment of the bedroom — but also seeking intense sensory input (wanting to be squashed, wrapped tightly, or in contact with a parent).

Most sleep advice for children targets one set of factors — either the behavioural patterns associated with poor sleep hygiene, or the sensory factors associated with autism, or the regulatory factors associated with ADHD.

AuDHD sleep difficulty involves all of these, interacting with each other. An approach that addresses only the sensory environment doesn't reach the ADHD's resistance to stopping. An approach that only targets routine and schedule doesn't reach the autistic sensory experience of the bedroom. A behavioural approach that ignores the nervous system state entirely tends to produce escalation rather than improvement.

Effective support for AuDHD sleep needs to hold the whole picture.

Work with the natural sleep window, not against it

If your AuDHD child's body consistently isn't ready for sleep until 9:30 or 10pm, fighting that biology by enforcing an earlier bedtime is likely to produce resistance without producing sleep. Working with the natural sleep window — at least initially — and building from there is often more productive.

Prioritise regulation across the whole day

The nervous system state at bedtime is the product of everything that happened during the day. For AuDHD children who have spent a day managing the demands of school, social interaction, and sensory experience, building regulation support throughout the day — not just in the hour before bed — changes what the nervous system brings to the evening.

Use proprioceptive input strategically

Heavy work activities in the wind-down period can be particularly effective for AuDHD children because they simultaneously address the ADHD's need for input and support the autistic nervous system's need for deep, organising proprioceptive feedback. The key is timing — these activities work best one to two hours before bed, not immediately before sleep.

Address the sensory environment specifically

The AuDHD bedroom may need to address both sensory sensitivity (reducing aversive sensory input) and sensory seeking (providing deep pressure, weight, or specific textures that satisfy the seeking need). This sounds contradictory — and in some children it is — but a careful sensory assessment makes it possible to identify what this particular child's nervous system needs.

Reduce the demand load of the transition

For AuDHD children, the demand of transitioning to bedtime can be as dysregulating as any sensory factor. Making the transition as low-demand as possible — offering genuine choices, using indirect language, building in adequate warning time — reduces the activation that the transition itself creates.

Get a sensory assessment

Because AuDHD sleep difficulty involves an interaction of autistic and ADHD factors that looks different in every child, a formal sensory assessment by a paediatric OT gives you a clear, individualised picture of what's driving the sleep difficulty for your specific child — and what strategies are actually likely to help.

Many children who are AuDHD are diagnosed with one condition first — often ADHD — and receive their autism diagnosis later, or vice versa. Some children are clearly both but haven't received formal recognition of both.

Access to OT sleep support doesn't require a dual diagnosis. If your child is clearly presenting with features of both autism and ADHD, whether or not both have been formally identified, the approach remains the same: understand the nervous system that's actually in front of you and build support around that.

Jessinta Benton is a paediatric occupational therapist with a clinical focus on sleep for neurodiverse children. Dream Sleep OT is based in Maylands, Perth, and supports families across Australia via telehealth. NDIS self and plan-managed participants welcome. No referral needed.

Apply to work with Jessinta