Many adults don’t think about having ADHD until they experience years of concentration difficulties with focus or feeling constantly overwhelmed by everyday life.
What often gets mistaken for stress, forgetfulness, being easily distracted, or simply “not trying hard enough” may sometimes have another explanation.
Awareness of ADHD in adults in the UK has increased greatly, and new NHS England research indicates that the condition might be more prevalent than most people think. Almost 13.9% of adults screened positive for ADHD symptoms, but only 1.8% reported receiving a professional diagnosis for ADHD. The majority of adults can still experience symptoms without realising the cause, and it is estimated that there are 2.5 million people in England who are living with ADHD.
This guide explains how the screening for ADHD is done, the screening pathways, and what you can expect after you’ve been diagnosed.
What Is ADHD Screening?
ADHD screening is an initial process designed to identify whether your experiences and symptoms may align with ADHD and whether a formal assessment may be appropriate.
Screening is not the same as diagnosis.
Screening identifies patterns of symptoms. Diagnosis confirms whether those experiences meet recognised clinical criteria.
Adult ADHD screening often includes:
- Structured questionnaires
- Discussion of everyday difficulties
- Review of symptom history
- Understanding how symptoms affect daily life
ADHD Screening vs ADHD Assessment
Although people often use these terms interchangeably, they have different purposes.
ADHD Screening
- Early symptom identification
- Questionnaires and initial review
- Helps determine whether the assessment is appropriate
ADHD Assessment
- Full clinical evaluation
- Conducted by an ADHD specialist
- Leads to diagnostic decisions
Signs You May Need ADHD Screening
Adult ADHD does not always appear in obvious ways.
In adults, the signs may be persistently feeling mentally overwhelmed, a lack of organisation, emotional frustration, or an inability to maintain routines.
The report from NHS services indicates that around 25% of adults (aged 16-24) have been identified as having ADHD symptoms, emphasising the need to identify concerns early.
If you have frequent problems with:
- Difficulty concentrating
- Forgetfulness and disorganisation
- Impulsivity
- Poor time management
- Emotional regulation difficulties
Common ADHD Symptoms in Adults
Inattentive Symptoms
- Losing focus easily
- Forgetting details
- Difficulty completing tasks
- Misplacing important items
Hyperactive–Impulsive Symptoms
- Feeling mentally restless
- Talking excessively
- Acting before thinking
Combined Presentation
A combination of inattentive and hyperactive symptoms.
How to Get Screened for ADHD
Step 1: Recognise the Symptoms
When learning how to get screened for ADHD, the first step is recognising your symptoms.
Ask yourself:
- Have these challenges existed for years?
- Do they affect different areas of life?
- Were similar difficulties present in childhood?
Taking notes can make it easier to communicate with professionals.
Step 2: Complete an ADHD Screening Questionnaire
Many adults begin with an ADHD screening test.
One commonly recognised tool is the Adult ADHD Self-Report Scale (ASRS).
These questionnaires may help:
- Organise observations
- Identify symptoms
- Prepare for professional discussions
Self-screening is helpful but cannot replace diagnosis.
Step 3: Speak to Your GP
The formal process begins with a GP appointment for most adults in the UK.
Prepare examples that explain:
- Your symptoms
- How long have they existed
- Their impact on daily life
Your GP may recommend a referral for an Adult ADHD Assessment UK.
Step 4: Choose an Assessment Route
NHS Assessment
- Referral-based
- No direct assessment cost
- Longer waiting periods
Right to Choose
Available in England under the eligibility criteria.
Private ADHD Assessment
Some adults choose private assessment to access specialist care more quickly.
Private routes may offer faster appointments, flexible scheduling, and consultant-led support depending on the provider. Services such as Prestige Private Health provide private healthcare options that may support adults seeking timely access to assessment and follow-up care.
ADHD Screening Through the NHS
Many adults choose the NHS assessment first.
However, growing awareness has increased demand.
By late 2025, more than 735,157 ADHD assessment referrals remained open in England, contributing to long waiting periods.
Benefits
- Accessible pathway
- Integrated support
Limitations
- Longer waiting times
- Regional variation
What to Expect After a Referral
After referral, you may:
- Complete questionnaires
- Attend initial appointments
- Wait for specialist assessment
Private ADHD Screening and Assessment Options
Demand for ADHD services continues to increase.
In December 2025 alone, nearly 19,000 new referrals were made for possible ADHD assessments in England.
Research also suggests adults with common mental health conditions are five times more likely to screen positive for ADHD symptoms.
Private assessment may offer:
- Faster specialist access
- Online ADHD assessment UK options
- Consultant-led evaluation
Benefits of Private ADHD Screening
- Reduced waiting times
- Flexible appointments
- More continuity of care
For adults who prefer a private route, providers such as Prestige Private Health may offer greater flexibility through private healthcare services. Also, offer quicker access to discussions around assessment options.
What Happens During an Adult ADHD Assessment?
An adult ADHD assessment looks beyond symptoms alone.
The goal is to learn about how experiences impact functioning daily.
Assessment commonly includes:
Clinical Interview
Questions around:
- Attention
- Behaviour patterns
- Emotional regulation
Medical and Personal History
You may discuss:
- Childhood experiences
- Education
- Employment
- Family history
Symptom Review
Symptoms are reviewed against recognised diagnostic standards.
Diagnostic Evaluation
The clinician decides whether the challenges experienced are due to ADHD.
How Long Does an ADHD Assessment Take?
Most assessments take from 1 to 3 hours. While some require more than one appointment.
What Happens After an ADHD Diagnosis?
Receiving an adult ADHD diagnosis often creates understanding rather than simply attaching a label.
Support options may include:
- Medication and titration
- ADHD coaching
- Cognitive behavioural therapy
- Workplace adjustments
- Behavioural support
ADHD Treatment and Ongoing Care
Treatment varies from person to person.
Adults get benefits from medical care and practical strategies and routines.
Can You Get Screened for ADHD Online?
Yes. Many services now offer online support.
Online pathways may include:
- Screening questionnaires
- Virtual consultations
- Remote specialist assessments
Professional evaluation remains necessary for diagnosis.
ADHD Screening vs Self-Diagnosis
Reading about ADHD online can increase awareness, but self-diagnosis has limitations.
Several experiences may overlap with ADHD symptoms, including:
- Anxiety
- Depression
- Burnout
- Sleep difficulties
Professional assessment helps provide a clearer picture.
Conclusion
Learning how to get screened for ADHD can be complicated at first, particularly when the symptoms have been ongoing for years without a clear cause.
Screening is not a process of labelling. But it is to determine if ADHD is a factor in your everyday struggles and, if so, to get support that will work for you.
The demand for adult ADHD screening keeps on rising as adults who screen positive have risen from 8.2% in 2007 to 13.9% in 2023/24.
Taking the first step today towards professional evaluation helps you get clarity, assistance, and long-term improvement when symptoms of ADHD are interfering with your life.
Frequently Asked Questions About ADHD Screening
How do I get screened for ADHD in the UK?
Track symptoms, complete a screening questionnaire, and speak with your GP.
Can adults get screened for ADHD?
Yes. Adult ADHD screening is available through NHS and private pathways.
How long does the ADHD assessment process take?
Timeframes vary depending on provider and route.
Can ADHD be diagnosed online?
Some clinicians offer remote assessments where appropriate.
Is a private ADHD diagnosis recognised in the UK?
Private diagnoses completed by qualified professionals may be recognised.
Do I need a GP referral for an ADHD assessment?
Usually for NHS pathways, but not always for private assessment.