Diagnosis and treatment
Autism or ADHD alongside mental-health difficulties
They may already have an autism or ADHD diagnosis, be waiting for an assessment, or be trying to explain needs that services have overlooked. Start with what makes life and getting help easier for them.
Notice what has changed for this person
Autism and ADHD are neurodevelopmental conditions. Someone can also have depression, anxiety, psychosis or another mental-health condition. Do not assume a new difficulty is explained by autism or ADHD.
Write down what is usual for them, what has changed and when. A change in sleep, eating, self-care, distress or everyday activities is useful to describe to a clinician. This page is not a checklist for diagnosing any of these conditions.[1]
Do not assume autism explains a new change. If they are suddenly confused, call 999. For other new or worsening difficulties, seek medical advice; use sudden change or urgent help if help cannot wait. A previous shutdown does not rule out a new illness.
What would make support easier?
Conversations are difficult
Ask how they prefer to communicate. They might find a short written message easier than a phone call, want one question at a time, or need more time to answer. Say clearly what you are asking rather than relying on hints.
Ask whether noise, lighting or a crowded space is making things harder. Offer a quieter place or a pause. Do not assume that every autistic person wants the same changes.[2]
They describe autistic burnout
Autistic burnout is a term developed by autistic people to describe severe exhaustion associated with sustained demands, sensory overload and the effort of hiding autistic traits, often called masking. Everyday tasks and communication may become harder. These experiences deserve support, but the term alone does not establish what is causing a change.
Ask which demands can be reduced and what helps them recover. With their agreement, offer practical help with a meal, an appointment or a task they choose. Make room for rest and interests they enjoy, without setting a deadline for recovery. If difficulties persist or worsen, encourage a GP appointment to consider physical and mental-health needs too.
National Autistic Society: autistic fatigue and burnout. This guidance draws on autistic people's experiences; it is not a diagnostic test.
They are overwhelmed, having a meltdown or shutting down
A meltdown can involve overwhelming distress and a temporary loss of control. A shutdown may be quieter: the person might withdraw or find speaking and responding difficult. Neither should be treated as deliberate behaviour.
When they feel able, ask what helps and agree a plan: preferred communication, somewhere quieter, whether they want you nearby and who to contact.
During overwhelm, reduce noise, bright light and unnecessary demands where possible. Use few words and allow time to respond. Offer space without insisting they move. Do not force conversation, touch or eye contact, or try to restrain them to make them calm down. Follow any agreed plan and give them time afterwards before discussing what happened.
Your safety matters too. Step back if you are at risk and seek help. You do not have to manage repeated crises alone: ask their team about a support plan and use support for you. If the change is new or you are unsure what is happening, seek medical advice rather than deciding it is a shutdown.
National Autistic Society: meltdowns · Leicestershire Partnership NHS Trust: meltdowns and shutdowns.
Appointments are overwhelming
Ask the service in advance what the appointment will involve and what changes are possible. Examples include written questions, a quieter waiting space, an agreed place to wait outside, a longer appointment or bringing a chosen supporter.
Help the person make a short note of what helps and what makes communication harder. Ask for this to be recorded so they do not have to explain it at every visit. If they want you there, ask what part they want you to play rather than answering everything for them.
Prepare for a meeting · Record information-sharing preferences.
They lose track of appointments or daily tasks
ADHD can make organisation and keeping track of tasks difficult. Ask whether one reminder, a written plan or doing a task alongside them would help. Agree how to remind them so that it does not become repeated checking or an argument.
Keep any agreed plan small enough to use. For example: one appointment in a shared calendar, with their permission, and a reminder about the journey. Ask the clinician about treatment or medicine concerns; do not adjust ADHD medication yourself.[3]
Mental-health services are passing them elsewhere
Ask which difficulty the service is assessing and how they will adapt the assessment. Be specific about new symptoms and the impact on everyday life. Ask who is responsible for help while another assessment is pending.
In England, NHS England guidance says access to mental-health care should not be restricted because someone is autistic or awaiting an autism assessment. Across the UK, our guide to delays and refusals gives the different routes for asking for a review or raising concerns.[4]
If there is a sudden serious change or help cannot wait, use sudden change or urgent help.
Sources and how this guide was written
- Autism, ADHD and mental health
NHS: what autism is and NHS: ADHD in adults describe lifelong features and co-occurring conditions. The comparison with the person’s usual experience is a practical way to prepare for an assessment, not a diagnostic test.
Back to the advice Added burnout, meltdown and shutdown sections checked 7 October 2026. The National Autistic Society and local NHS explanatory sources are linked beside the advice. NICE CG142 supports autonomy, sensory adjustments and assessing physical and coexisting mental-health needs; it is distinct from the experience-informed burnout explanation. NHS sudden confusion guidance supports the visible emergency advice.
Communication and sensory needsNational Autistic Society: asking for adjustments gives examples for communication, sensory needs and appointments. The examples here are requests to discuss; legal rules and service arrangements differ across the UK.
Back to the advice- Practical support with ADHD
NHS: ADHD in adults covers organisation, written instructions, help with tasks and specialist-led medication. The calendar example is our suggestion to agree with the person.
Back to the advice - Access to mental-health care
NHS England: meeting the needs of autistic adults in mental-health services. The access statement applies to England; this page does not present it as a UK-wide service rule.
Back to the advice
Last full source check: 2 October 2026
Burnout, meltdowns, shutdowns and safety wording checked: 7 October 2026.
Consent and seeking advice wording checked: 7 October 2026. Sources and explanation.
Independent information, not a medical or crisis service. This guidance has not been clinically reviewed. How we use sources.