What is adhd?
ADHD is a neurodevelopmental condition characterised by persistent inattention, impulsivity and, in some people, hyperactivity or restlessness. In adults it often shows up as chronic disorganisation, difficulty sustaining focus, forgetfulness, procrastination and emotional impulsivity — patterns present since childhood, even if never recognised at the time. Many adults seek assessment after years of underachievement, burnout or a child's diagnosis prompting recognition of their own traits.
ADHD is thought to affect around 3–4% of adults. Diagnosis requires a structured assessment by a psychiatrist or specialist clinician, covering current symptoms, childhood history (often with input from someone who knew you then), and the impact across different areas of life. Rating scales support, but do not replace, this clinical interview.
Common symptoms
- Difficulty sustaining attention on routine tasks
- Chronic disorganisation and missed deadlines
- Forgetfulness in daily activities
- Restlessness or feeling constantly 'driven'
- Impulsive decisions or interrupting others
- Starting many projects but finishing few
- Emotional ups and downs and low frustration tolerance
How long will you wait?
NHS adult ADHD assessment waits are often one to three years or more in many parts of England, and some services have paused new routine referrals altogether.
Privately, ADHD assessments are often available within 2–4 weeks, with medication titration starting shortly after diagnosis where appropriate.
NHS England median referral-to-treatment wait: 12.4 weeks, with 2.5 million people waiting over 18 weeks (May 2026). Individual waits vary by trust and urgency.
Treatment options
- Stimulant medication. Methylphenidate or lisdexamfetamine, the most effective treatments for core ADHD symptoms, prescribed and titrated by a specialist.
- Non-stimulant medication. Atomoxetine or guanfacine when stimulants are unsuitable or not tolerated.
- Psychological therapy and coaching. ADHD-focused CBT and coaching to build planning, time management and emotional regulation skills.
- Workplace and study adjustments. Reasonable adjustments and structured routines that reduce the everyday impact of symptoms.
What does private treatment cost?
As a guide, a private adult ADHD assessment costs around £900–£1,500, with medication titration and follow-up reviews typically £150–£300 per appointment.
Does health insurance cover adhd?
Most UK private medical insurers exclude ADHD assessment and treatment, classing it as a neurodevelopmental condition rather than an acute illness, so cover is rare even on policies with mental health add-ons. A small number of policies or employer schemes make limited provision, but you should assume self-funding unless your insurer confirms otherwise in writing. Shared-care arrangements with your NHS GP can reduce long-term prescription costs after private titration.
Frequently asked questions
Can I get a private diagnosis and then NHS prescriptions?
Often, yes — through a 'shared care' agreement. Once a private specialist has completed diagnosis and stabilised your medication dose, they can ask your NHS GP to take over routine prescribing, with the specialist reviewing periodically. GPs are not obliged to accept shared care, and practices vary, so it is sensible to ask your GP surgery about their policy before booking a private assessment.
What does an adult ADHD assessment involve?
Expect a detailed clinical interview lasting around 90 minutes to two hours, covering your current difficulties, childhood history, education, work, relationships and mental health. You will usually complete validated rating scales beforehand, and the assessor may ask for input from a parent, partner or old school reports. The clinician then explains whether you meet diagnostic criteria and discusses treatment options.
What is 'Right to Choose' and can it help with the wait?
In England, NHS patients have a legal right to choose their provider at the point of GP referral, which can include NHS-commissioned independent ADHD services with shorter waits than the local clinic. Ask your GP about a Right to Choose referral. Waits at these providers have grown as demand has risen, but they are frequently months rather than years.