Adult ADHD and Autism Assessments: What to Expect

Many adults seek an assessment after experiencing longstanding difficulties with attention, organisation, communication, social interaction, sensory sensitivities, or managing everyday demands. Some may have developed effective coping or "masking" strategies, meaning these differences were not recognised during childhood.

At Health Call Clinic, adult ADHD and Autism Spectrum Disorder (ASD) assessments are comprehensive clinical assessments conducted by an appropriately trained healthcare professional. They consider current experiences, developmental history, functioning across different settings, mental and physical health, and possible alternative or coexisting conditions.¹,² Recognized assessment methods such as the Diagnostic Interview for Social and Communication Disorders (DISCO) may be used where appropriate.

If you are still deciding whether an assessment is right for you, our guides to adult ADHD assessment in Dubai and adult autism assessment and later diagnosis cover the signs and common pathways to seeking help.

How Long Does the Assessment Take?

A comprehensive adult ADHD and/or autism assessment usually requires approximately three to four hours of clinical assessment time. To make the process more manageable, this is normally divided across multiple appointments rather than completed in one long session.

The number and length of appointments may vary depending on the individual's history, the complexity of their presentation, and whether both ADHD and autism are being assessed.

What Does the Assessment Involve?

The assessment may include:

• A detailed discussion about the difficulties that led you to seek an assessment
• Your developmental history, including early childhood, schooling and relationships
• Your educational and employment history
• Attention, concentration, organisation, impulsivity and activity levels
• Social communication, relationships and understanding of social situations
• Routines, focused interests, repetitive behaviours and responses to change
• Sensory sensitivities, such as reactions to sound, light, touch, smell or texture
• Your current daily functioning at home, at work and in social settings
• Your physical and mental health history
• Relevant family history
• Coping strategies, masking and the impact of symptoms on your wellbeing
• Consideration of other conditions that may cause or contribute to similar difficulties
• Completion and review of relevant questionnaires and structured interviews

Rating scales and questionnaires can contribute useful information, but ADHD or autism should not be diagnosed solely from a questionnaire score. The clinician interprets them alongside developmental history, clinical interview, functional impact and other available evidence.¹,²

What Information Should I Prepare?

Before the assessment, you may be asked to provide:

• Previous psychiatric, psychological or neurodevelopmental reports
• School reports or educational assessments, if available
• Previous ADHD or autism assessment results
• A current list of medications
• Relevant medical records
• Information about difficulties experienced during childhood and adulthood
• Examples of how these difficulties affect work, education, relationships and daily life
• Contact details for a parent, relative or other informant, if they are participating

You do not need to have every document listed above. Please provide whatever information is reasonably available.

Who Attends the Appointments?

Most of the assessment is conducted directly with the adult being assessed. Because ADHD and autism are neurodevelopmental conditions, information about childhood and early development can be helpful. Where possible and with the person's agreement, this may come from a parent, relative, school reports or another person who knew them earlier in life. The absence of an available informant should be considered individually rather than treated automatically as a reason to refuse assessment.¹,²

The client's privacy and consent remain central throughout the assessment. Information is not obtained from or shared with other people without the client's permission, except where disclosure is required for safety or by law.

Why Is a Detailed Assessment Necessary?

ADHD and autism can occur together. They may also overlap with anxiety, depression, trauma-related difficulties, sleep problems, learning differences and other mental or physical health conditions.

A comprehensive assessment is therefore important to understand the individual's overall presentation, consider alternative explanations and determine whether the relevant diagnostic criteria are met. The aim is not simply to assign a label, but to provide a clearer understanding of the person's experiences, strengths, difficulties and support needs.

What Happens After the Assessment?

Once the assessment has been completed, the psychiatrist reviews all the available information and discusses the findings with the client. The outcome may confirm ADHD, autism, both conditions, another explanation for the difficulties, or that further information is required before a conclusion can be reached.

Where applicable, a written clinical report can be prepared summarising the assessment findings, diagnostic conclusion and recommendations. Recommendations may include:

• Psychoeducation about ADHD and/or autism
• Psychological therapy or counselling
• Practical strategies for daily functioning
• Workplace or educational support
• Management of associated anxiety, depression or sleep difficulties
• Discussion of medication options for ADHD, when clinically appropriate
• Referral to another healthcare professional or service when required

Assessment does not automatically result in a diagnosis or prescription. Any diagnosis is based on the complete clinical evidence, and any treatment recommendation is considered separately through shared decision-making.¹,² A diagnosis does not in itself guarantee access to medication, workplace accommodations or other services.

Is the Process Different for Children?

Yes. This article describes assessment for adults. Assessment of children and adolescents requires an age-appropriate pathway and appropriately trained professionals, usually with greater involvement from parents or caregivers and information from the child's school. Depending on the child's needs, input from other professionals may also be required.

Parents seeking an assessment for a child or adolescent should contact the clinic so that the appropriate pathway can be explained.

Frequently Asked Questions

What is the DISCO assessment?

The Diagnostic Interview for Social and Communication Disorders (DISCO) is one structured tool that may contribute to an autism assessment. It explores development, communication, social interaction, behaviour, sensory experiences, interests and daily functioning across the person's lifetime. It does not independently establish a diagnosis and must be interpreted within the complete clinical assessment.²

Is information from a parent or relative required?

Because ADHD and autism are neurodevelopmental conditions, information about childhood and early development can be helpful. Where possible and with the person's agreement, this may come from a parent, relative, school reports or another person who knew them earlier in life. The absence of an available informant should be considered individually rather than treated automatically as a reason to refuse assessment.¹,²

Does an assessment always lead to a diagnosis or medication?

No. Assessment does not automatically result in a diagnosis or prescription. Any diagnosis is based on the complete clinical evidence, and any treatment recommendation is considered separately through shared decision-making.¹,²

How much does an adult ADHD or autism assessment cost?

Fees vary depending on the complexity of the assessment and number of appointments required. Our team can explain the appointment structure, required documents, and fees before you book.

Arranging an Assessment

If you are considering an adult ADHD assessment, you can read more about our adult ADHD assessment service. If autism is the question, see our DISCO-based adult autism assessment. Our team can explain the appointment structure, required documents, fees and available appointments before you book.

To speak with our psychiatry team, call +971 4 363 5343 or WhatsApp +971 52 197 1179.