Why Does It Matter Who Carries Out Your ADHD Assessment?



BY: Bloomfield Health / July 6, 2026


When seeking an assessment for Attention Deficit Hyperactivity Disorder (ADHD), one of the most important decisions is not simply where to go—but who will carry out the assessment.

As awareness of ADHD has increased, so too has the number of organisations offering assessments. These range from NHS services to independent providers, with assessments undertaken by professionals from different backgrounds including psychiatrists, psychologists and specialist nurses.

All regulated professionals have an important role in ADHD care. However, for many adults—particularly those with complex symptoms or possible co-existing mental health conditions—a consultant psychiatrist-led assessment provides a level of medical expertise that can make a meaningful difference to diagnostic accuracy, treatment planning and long-term outcomes.

ADHD Is More Than a Checklist

 ADHD is a recognised neurodevelopmental disorder characterised by persistent difficulties with attention, impulsivity and/or hyperactivity that interfere with everyday functioning. Diagnosis is based on established criteria, such as those in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) or the International Classification of Diseases (ICD-11).

Importantly, diagnosis is not made by simply identifying symptoms on a questionnaire.

A high-quality assessment requires careful clinical judgement to determine:

  • whether symptoms genuinely represent ADHD
  • whether they began during childhood
  • whether they occur across multiple settings
  • whether they cause clinically significant impairment
  • whether another condition provides a better explanation
  • whether more than one condition is contributing to the presentation.

This process relies on detailed clinical interviewing, collateral history where appropriate, review of previous records, and careful diagnostic reasoning.

ADHD Rarely Exists in Isolation

One of the greatest challenges in adult ADHD assessment is that symptoms often overlap with other psychiatric conditions.

For example, difficulties with concentration may arise from:

  • anxiety disorders
  • depression
  • post-traumatic stress disorder (PTSD)
  • obsessive-compulsive disorder (OCD)
  • bipolar disorder
  • psychotic disorders
  • autism spectrum disorder
  • personality disorders
  • sleep disorders
  • substance misuse.

Equally, many people genuinely have ADHD alongside one or more of these conditions.

This distinction matters because treatment recommendations may differ considerably depending on the underlying diagnosis.

A clinician must therefore ask not only:

“Does this person have ADHD?”

but also:

“What else might explain these symptoms?”

and

“Are there additional conditions that also require treatment?”

Understanding Psychiatric Comorbidity

Research consistently shows that psychiatric comorbidity is common in adults with ADHD.

Many individuals experience:

  • anxiety disorders
  • depressive disorders
  • autism spectrum disorder
  • eating disorders
  • substance use disorders
  • trauma-related disorders.

These conditions can influence how ADHD presents and how it should be treated.

An assessment that focuses only on ADHD risks overlooking important aspects of a person’s mental health.

A consultant psychiatrist’s training encompasses the diagnosis and management of the full range of psychiatric disorders, enabling a comprehensive formulation rather than considering ADHD in isolation.

The Importance of Differential Diagnosis

 Consultant psychiatrists spend many years developing expertise in differential diagnosis.

This means systematically considering all plausible explanations for a person’s symptoms before reaching a diagnosis.

For example:

  • Is lifelong distractibility due to ADHD, or has chronic anxiety reduced concentration?
  • Is impulsivity part of ADHD, emotionally unstable personality disorder, bipolar disorder, or all three?
  • Are periods of increased activity actually hypomania?
  • Could trauma-related hypervigilance be mistaken for hyperactivity?
  • Could untreated sleep apnoea or chronic insomnia explain attentional difficulties?

These questions often cannot be answered by questionnaires alone.

They require detailed psychiatric assessment and clinical experience.

Considering Physical Health

Before recommending medication, it is important to consider wider physical health.

This includes:

  • cardiovascular history
  • blood pressure
  • pulse
  • current medication
  • substance use
  • medical conditions that may influence prescribing.

Consultant psychiatrists are medically qualified doctors who integrate physical and mental health considerations when developing treatment plans.

This holistic approach is particularly valuable when symptoms occur alongside other medical conditions or when multiple medications are being considered.

ADHD Treatment Is About More Than Medication

Medication is one evidence-based treatment for ADHD, but it is not the only option.

NICE guidance recommends that treatment should be individualised and may include:

  • psychoeducation
  • environmental adaptations
  • psychological interventions
  • coaching
  • occupational support
  • medication where appropriate.

Choosing the right treatment requires an understanding of:

  • symptom severity
  • functional impairment
  • patient preferences
  • co-existing psychiatric disorders
  • physical health
  • previous treatment response.

Medication decisions should always be made within the broader context of a person’s overall mental health.

Safe Prescribing Requires Psychiatric Expertise

ADHD medications are among the most effective treatments available in psychiatry. For many people they produce substantial improvements in concentration, organisation and quality of life.

However, prescribing also requires careful assessment.

Certain psychiatric conditions may influence prescribing decisions, including:

  • bipolar disorder
  • psychosis
  • significant substance misuse
  • severe anxiety disorders
  • eating disorders.

In some situations, treating another condition first may be clinically appropriate. In others, ADHD treatment may improve both ADHD symptoms and associated mental health difficulties.

These decisions require careful medical judgement rather than a one-size-fits-all approach.

Experience Matters

Consultant psychiatrists typically complete:

  • medical school
  • two years of foundation medical training
  • core psychiatric training
  • higher specialist training
  • Membership of the Royal College of Psychiatrists (MRCPsych)
  • entry onto the GMC Specialist Register.

This represents well over a decade of postgraduate education and supervised clinical experience.

Throughout this training, psychiatrists develop expertise in assessing diagnostic uncertainty, managing complex presentations, understanding psychopharmacology, and balancing the risks and benefits of different treatment approaches.

A Comprehensive Assessment Should Leave You Better Informed

A good ADHD assessment should provide more than a diagnosis.

Patients should come away with a clearer understanding of:

  • their strengths
  • the nature of their difficulties
  • any co-existing conditions
  • evidence-based treatment options
  • practical recommendations for work, education and daily life.

Whether or not ADHD is ultimately diagnosed, the assessment should help explain why symptoms have occurred and what the most appropriate next steps are.

Bloomfield Health’s Approach

At Bloomfield Health, ADHD assessments are led by experienced consultant psychiatrists who undertake comprehensive psychiatric evaluations rather than relying solely on symptom checklists.

Our assessments consider the wider picture, including developmental history, psychiatric comorbidity, physical health, psychological factors and functional impairment. Where appropriate, we work closely with psychologists and other members of our multidisciplinary team to ensure recommendations are tailored to each individual.

Our aim is not simply to answer the question, “Do I have ADHD?” but to help patients understand their mental health as a whole and develop an evidence-based treatment plan that reflects their individual needs.

If you are considering an ADHD assessment, or would like to discuss whether one is appropriate for you, our team would be pleased to help.

References

  1. National Institute for Health and Care Excellence (NICE). Attention deficit hyperactivity disorder: diagnosis and management (NG87). Updated 2019.
  2. Royal College of Psychiatrists. ADHD in Adults (patient information).
  3. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR). 2022.
  4. World Health Organization. International Classification of Diseases 11th Revision (ICD-11).
  5. Faraone SV, et al. The World Federation of ADHD International Consensus Statement. Neuroscience & Biobehavioral Reviews. 2021.

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