What to explain
Tell the clinician what has been lifelong and what changed recently.
“Some tasks have always been hard for me, but recently I have struggled with things I used to manage. I want help with this change and to discuss whether I need an autism assessment.”
Questions to take in
Ask about assessment, new health problems, practical support, and what happens next.
- Does my lifelong history justify a full autism assessment, even if a short questionnaire score is low?
- Who assesses autism in my age group near here? Do they have experience with adults, women, people who hide their difficulties, learning disability, or complex mental and physical health needs?
- What part of the recent brain fog could come from sensory or social overload, and what new medical or mental health problem also needs checking?
- Could ADHD, depression, anxiety, sleep problems, a medicine, migraine, seizures, pain, thyroid disease, iron deficiency, or B12 deficiency be adding to the difficulty?
- Which questionnaire, examination, blood test, or referral would change what we do next, and which would not add useful information?
- What changes can start now at home, school, college, work, or appointments while I wait for assessment?
- How should I reduce demands without losing essential care, food, housing, work, education, or personal support?
- What symptoms mean I should get urgent help now, without waiting for the next appointment?
Questionnaires, assessments, and health checks to discuss
What each questionnaire or check can and cannot tell you.
AQ-10 helps decide whether to discuss adult autism assessment. A sensory profile records sensory needs. ASRS and PHQ-9 record ADHD and depression symptoms. Medicine, sleep, and blood checks look for other causes of poor thinking when the history makes them useful.
An autism assessment looks at childhood and current daily life.
The adult AQ-10 asks 10 questions and has a total from 0 to 10. NICE uses 6 or above as a point for offering full adult assessment, but a lower score does not cancel strong clinical concern or a lifelong history.
Ask your doctorADHD and depression questionnaires can help decide which problems need a fuller assessment.
The Adolescent/Adult Sensory Profile asks how someone usually responds to sound, light, touch, movement, taste, smell, and activity. A trained clinician can use it to plan daily changes, but it does not diagnose autism.
Ask your doctorBlood tests for thyroid problems, B12 or iron shortages may help when your symptoms or diet suggest them. Snoring or breathing pauses may need a sleep assessment.
ASRS records adult ADHD symptoms. It can help start an ADHD assessment discussion, but the clinician still needs childhood history, daily effect, and other possible causes.
Ask your doctorBefore the appointment
Take a short history, recent health information, and a list of what would make the visit easier.
Examples from childhood and examples of what has changed recently. School reports or someone who knew you then can help, if available.
Your medicine list and earlier reports. Tell the service if you need a quiet waiting area, written questions or a support person.
Use school reports, earlier records, family information, or your own long-term examples if available. Tell the clinician what evidence is missing and why.
How the doctor assesses this
Reasons to discuss a full autism assessment
- Since childhood, the person has had social-communication differences, a need for routines, restricted interests, trouble switching tasks, or sensory differences, even if other people didn't notice them.
- The person copies social behavior, rehearses conversations, forces eye contact, or hides distress, then needs long recovery or cannot manage ordinary tasks afterward.
- Current difficulties affect school, work, relationships, healthcare, self-care, housing, safety, or the ability to recover from ordinary demands.
Reasons the new brain fog also needs a separate medical review
- There's no childhood history of social-communication differences, a strong need for sameness, restricted interests, repeated behavior, or unusual responses to sensory input.
- The thinking problem is entirely new and does not follow sensory load, social effort, change, task switching, or prolonged demands.
- Sleep loss, depression, ADHD, a medicine, iron or B12 deficiency, thyroid disease, pain, migraine, infection, or another condition better explains the recent decline.
- Reducing demands and sensory input does not change the exhaustion or ability to complete ordinary tasks.
- The person has sudden confusion, new weakness, seizures, fainting, severe headache, fever, or another urgent medical symptom.
What to understand before choosing care
What the clinician needs to learn before recommending assessment or support.
- Decide whether the lifelong history and current difficulties justify a full autism assessment by a clinician or team trained in autism.
- Assess the recent brain fog separately so a lifelong condition does not hide a new sleep, mental health, medicine, neurological, hormonal, or nutritional problem.
- Ask about ADHD, anxiety, depression, sleep problems, pain, migraine, seizures, eating difficulties, and other conditions when the symptoms suggest them.
- Choose practical support now, such as written instructions, a quieter room, fewer rapid changes, planned breaks, help with daily tasks, or school and work adjustments.
- Agree on what to review next: daily function, sensory distress, exhaustion, sleep, mood, safety, and progress toward assessment or support.
What the research found
What the AQ-10, RAADS-R, and autistic burnout research numbers mean.
NICE uses an adult AQ-10 score of 6 or above as a point for offering full assessment, but it also says clinical concern and history can justify assessment. Six is a referral point, not a diagnosis.
A 2021 NHS study included 50 adults waiting for autism assessment. RAADS-R scores did not predict the final clinical diagnosis in that sample. This does not mean the questionnaire has no use during a trained assessment.
A 2025 review included 48 studies and about 4,000 autistic people. Severe exhaustion, reduced ability, and lower sensory tolerance were common descriptions of autistic burnout.
Most people in that 2025 burnout review were White, female, late-diagnosed adults with at least average verbal or intellectual ability. The findings may not describe children, people with learning disability, non-speaking people, or every cultural group equally well.
A 2026 study tested the 27-item AASPIRE Autistic Burnout Measure in 379 autistic adults. Its AUC was 0.92, where 1.0 would be perfect, for separating people who said they were currently burned out from those who did not. The authors said more testing in different groups is still needed.
How autism assessment changes for children, teenagers, adults, women, and older adults.
Children need age-appropriate developmental screening and assessment. The adult AQ-10 score rule doesn't apply to a child.
Teenagers may cope during school and become exhausted or unable to function afterward. Bring examples from school, friendships, sensory settings, routines, sleep, eating, and home recovery.
Adults can get an assessment even without a childhood diagnosis. School reports and family history can help, but clinicians can also use the records and long-term examples that are available.
NICE warns that autism can go unnoticed in girls and that learned ways of hiding difficulty can delay recognition. Ask how hard the person works to appear fine and how tired they feel afterward.
Older adults can seek autism assessment. New trouble with memory, speech, movement, balance, medicines, money, cooking, or travel still needs a separate medical review.
If the answer is no
If your doctor will not refer you for an autism assessment
An adult autism referral may be declined when it doesn't show both long-term autism traits and a clear effect on daily life. NICE says an adult assessment should be considered when these traits affect work, education, relationships, or mental health care. An assessment uses your history and behavior. It is not a blood test.
What changes the answer
- Describe traits that began in childhood. Give examples of social or communication problems, strict routines, repeated behavior, or strong interests. Say which ones are still present now.
- Show how daily life is affected. Explain what happens at work, in education, or in relationships. Include any past or current contact with mental health or learning disability services.
- Bring an AQ-10 result if your clinic uses it. NICE says a score of 6 or more can support a full assessment. Clinical judgment can also support one, so the score is not the only route.
- Bring early records when you can. School reports and information from someone who knew you as a child can help. NICE also allows other records when no family member is available.
United States, United Kingdom, and Australia
Who to contact about Autism and Brain Fog.
US United States
Ask for the right autism referral and a separate review of new symptoms. Bring lifelong examples and recent changes. Ask which local clinician assesses autism in your age group and which new symptoms need medical review.
- Ask a primary care or mental health clinician for a referral to a psychologist, psychiatrist, neuropsychologist, or another clinician experienced in adult autism assessment.
- An adult assessment asks about social communication, sensory needs, repetitive behavior, restricted interests, current life, and early development.
- For a child, ask the pediatrician about developmental evaluation and contact the school about educational assessment and support.
UK United Kingdom
Ask the GP what the local autism service needs. Bring the AQ-10 if used, childhood and current examples, school records if available, recent health changes, and the support you need while waiting.
- Ask a GP or another health or social care professional about referral to the local adult autism assessment service.
- NICE says an adult AQ-10 score of 6 or above can prompt full assessment, but clinical concern and history can also justify referral.
- Local referral forms and waiting times differ, so ask what evidence the local service needs and what support can start while you wait.
AU Australia
Ask who performs adult autism assessments locally. Take childhood and current examples, earlier reports, health concerns, access needs, and questions about fees, reports, and follow-up.
- Adults can speak with a GP, Aboriginal health worker, or another primary health professional about referral for autism assessment.
- The assessment should consider development, communication, sensory experiences, daily living, relationships, work or education, and other health conditions.
- Ask the service who will assess you, what the cost is, what reports you'll get, and what Medicare, private insurance, school, or disability support may apply.
Safety
Show how it affects daily life
- One task that got harder: what happened just before, what help you needed, how long recovery took.
- Record sound, light, touch, movement, crowds, social effort, unexpected change, task switching, sleep, pain, meals, and medicine timing beside the brain fog.
- Check whether a quieter space, written instructions, fewer tasks, a planned break, familiar food, sleep, or help from another person changed what you could do.
- Separate long-term needs from recent losses. For example, needing quiet since childhood is different from suddenly being unable to make a meal.
- At follow-up, compare daily tasks, sensory distress, sleep, mood, communication, and recovery time. One questionnaire score isn't enough to judge progress.
Source checked
Sources behind this handout.
- 01
Ali D et al. Burnout as experienced by autistic people: a systematic review. Clinical Psychology Review. 2025. PMID: 41207162.
Source - 02
Bougoure M et al. Measuring autistic burnout: validation of the AASPIRE Autistic Burnout Measure in autistic adults. Autism. 2026. PMID: 40698409.
Source - 03
Jones SL et al. The effectiveness of RAADS-R as a screening tool for adult autism referrals. 2021. PMID: 34552768.
Source - 04
National Institute of Mental Health. Autism Spectrum Disorder: diagnosis in children and adults. Current page accessed 2026.
Source - 05
National Institute for Health and Care Excellence. CG142: Autism spectrum disorder in adults. Last reviewed 2025.
Source - 06
National Institute for Health and Care Excellence. CG128: Autism recognition and referral in people under 19. Current recommendations accessed 2026.
Source