If you or your child has been displaying symptoms of Attention-Deficit/Hyperactivity Disorder (ADHD), the idea of pursuing an assessment can feel overwhelming. It’s natural to feel anxious about the unknown, especially when it involves a potentially life-changing diagnosis.
We understand that taking this step is a significant decision, and you deserve a clear, empathetic overview of what lies ahead.
This guide is designed to demystify the process, offering you a professional and step-by-step walk-through of a typical ADHD assessment. Our goal is to replace anxiety with understanding, preparing you for what to expect during each phase.
Symptoms To Look Out For
ADHD Symptoms in Adults
- Difficulty sustaining attention and focus.
- Poor time management and organisational skills.
- Significant impulsivity, restlessness or hyperactivity.
- Chronic disorganisation and task avoidance.
ADHD Symptoms in Children
- Difficulty concentrating or focusing on tasks.
- Fidgeting, squirming, or excessive talking.
- Frequent emotional outbursts or rapid mood swings.
- Forgetfulness, often leading to losing belongings or disorientation.
- Struggling to follow instructions or complete schoolwork/homework.
If these behaviours are pervasive, persistent, and impact daily functioning at home, school, or work, an assessment might be the best choice for you.
What Happens In An ADHD Assessment? (Adults & Children)
Step 1: Pre-Screening
The very first step is acknowledging the concern. This is initiated when you recognise that the behaviours are significant enough to impact performance and quality of life at home and school/work.
At this stage, your best next step is completing a preliminary screening questionnaire. This is a quick, initial tool to identify if the reported symptoms warrant a full clinical evaluation.
Once the pre-screening suggests a strong possibility of ADHD, the next action is contacting your chosen provider (in this case, PrivateADHD UK) to book your structured clinical interview, often conducted via video consultation for convenience.
Step 2: Structured Clinical Interview
This is the core diagnostic phase. It is a comprehensive, in-depth session with one of our registered, experienced, and trained clinicians.
Your clinician will conduct a detailed interview to:
- Identify whether the specific, impairing symptoms of ADHD are present.
- Discuss your or your child’s development, health, family, and lifestyle history.
A crucial part of this step is ruling out alternative causes for the symptoms, such as:
- Sleep disturbances.
- Social problems or adjustment disorders.
- Depression or anxiety
The clinician will also actively identify comorbidity, which is the presence of other co-occurring conditions, such as a learning disability, anxiety disorder, intellectual disability, or mood disorder, as the presence of these can significantly affect the presentation of ADHD symptoms.
The professional evaluator will be looking for evidence that aligns with the established diagnostic criteria:
- Pervasive symptoms – symptomatic behaviour must be present in two or more settings (e.g., home and school/work).
- Multiple observers – evidence is usually gathered from two or more observers (e.g., self-report, parent, teacher, spouse).
- Impairment – symptoms must be debilitating and clearly interfere with daily functioning and development.
- Childhood onset – confirmation that the symptoms started in childhood, typically before the age of 12.
- Exclusion – confirmation that symptoms are not due solely to another disorder (e.g., severe anxiety or a mood disorder).
NOTE: Screening follows the guidelines in the American Psychiatric Association’s Diagnostic and Statistical Manual, Fifth Edition Text Revision (DSM-5-TR™).
Step 3: Questionnaire Completion
Following the structured interview, you will be asked to complete standardised, validated rating scales. The purpose of these scales is to quantify the frequency and severity of symptoms against standardised criteria.
These forms are filled out by you, as well as by other key people in your life, such as teachers, close relatives, or a partner.
What are examples of ADHD screening questions?
The questions on these scales are designed to assess core ADHD behaviours. They might include:
- How often do you or your child have trouble finishing a project or task once you complete the challenging parts? (Assessing Inattention/Persistence)
- How often do you or your child fidget or squirm with your hands or feet when sitting for a long time? (Assessing Hyperactivity)
- How often are you or your child distracted by activity or noise around you? (Assessing Inattention)
- How often do you or your child have difficulty waiting for your turn in situations when taking turns is required? (Assessing Impulsivity)
Are there any immediate family members (parents, brothers or sisters) who you think may have or have had ADHD, whether or not they were diagnosed or treated? (Assessing Family History)
Step 4: Diagnosis & Report
If criteria are met, you’ll receive a full diagnostic report within 5 working days, including a personalised treatment plan.
What type of results do you get from an ADHD screening?
Your provider may decide to give out the following diagnostic results:
- Predominantly Hyperactive/Impulsive Type – symptoms are characterised by excessive movement and impulsivity for at least six months, but the criteria for inattention are not fully met.
- Predominantly Inattentive Type (formerly known as Attention Deficit Disorder or ADD) – symptoms are characterised by problems with inattention and executive function for at least six months, but criteria for hyperactivity/impulsivity are not fully met.
- Combined Type (Inattentive and Hyperactive/Impulsive) – the individual meets the criteria for both inattention and hyperactivity/impulsivity for at least six months. This is the most common presentation in children.
- Other Specified/Unspecified ADHD – this is for individuals who show significant impairing symptoms of inattention but do not meet the full criteria for the other types.
If your provider determines that you or your child does not meet the criteria for an ADHD diagnosis, they may recommend other tests or referrals to investigate the alternative causes that were identified during the clinical interview (e.g., anxiety disorder, learning disability).
If a diagnosis is confirmed, the provider will discuss initial treatment options, which may include medication, specific therapies (like CBT, ADHD mentoring, or ADHD coaching), or a combination of both. A follow-up appointment is often scheduled to monitor the start of treatment.
Step 5: Shared Care (If Applicable)
For many individuals who are prescribed medication, the final step involves setting up a collaborative plan with the local primary care physician (GP), also known as Shared Care Agreement.
This formal agreement allows your local GP to take over the ongoing prescribing and monitoring of your ADHD medication, following the initial stabilisation period by the specialist.
What Are The Risks Of ADHD Screening?
There are no inherent risks associated with the ADHD evaluation itself – it simply involves interviews, observation, and standardised questionnaires.
Any risks discussed would relate only to other medical tests that may be recommended to rule out separate medical conditions that could be mimicking ADHD symptoms.
Can I Take An ADHD Screening Test Online?
While numerous online questionnaires exist, only a trained, registered healthcare provider (such as a psychiatrist or specialist clinician) can formally diagnose and treat ADHD. Online screening tools are excellent for guiding the decision to seek a full evaluation, but are not a substitute for a comprehensive clinical assessment.
Are you experiencing symptoms of ADHD?
Take our FREE ADHD Screening Questionnaire today & get a clear indication of whether you need a full adult ADHD assessment.
Fully online & fully confidential.
NHS & NICE-Compliant Assessments With PrivateADHD
Seeking an ADHD assessment is an act of proactive self-care or parental advocacy. It is the necessary bridge between confusing symptoms and clear, effective support. Whether the final diagnosis is ADHD or another condition, the assessment provides the clarity needed to create a personalised, effective treatment plan that can dramatically improve quality of life.
If you are ready to take this crucial step, contact PrivateADHD UK today & begin your journey toward understanding and support.
