ADHD (Attention Deficit Hyperactivity Disorder) is one of the most common neurodevelopmental conditions, affecting an estimated 2.6 million people in the UK — approximately 5% of children and 3–4% of adults. Diagnosis rates have risen sharply in recent years, particularly in adults, as awareness of how ADHD presents in women, girls, and older age groups has improved. This guide covers ADHD symptoms, diagnosis, NHS treatment options, and practical management strategies.
What Is ADHD?
ADHD is a neurodevelopmental condition characterised by persistent patterns of inattention, hyperactivity, and/or impulsivity that significantly impact daily functioning. It is caused by differences in brain structure and function — particularly in the prefrontal cortex and dopamine/noradrenaline neurotransmitter systems — and has a strong genetic component (heritability estimated at 70–80%).
ADHD is not a behavioural problem, a result of poor parenting, or a sign of low intelligence. Many people with ADHD are highly intelligent and creative, with strong abilities in specific areas.
Types of ADHD
- ADHD — Predominantly Inattentive Presentation: Difficulty sustaining attention, easily distracted, forgetful, struggles to organise tasks, often loses things. Formerly called “ADD.” More common in girls and women, and often missed or diagnosed later.
- ADHD — Predominantly Hyperactive-Impulsive Presentation: Restlessness, difficulty sitting still, talking excessively, interrupting, acting without thinking. More commonly recognised in young boys.
- ADHD — Combined Presentation: The most common type; features of both inattention and hyperactivity-impulsivity.
ADHD Symptoms in Children
Inattention Symptoms
- Short attention span — easily distracted by irrelevant stimuli
- Making careless mistakes in schoolwork
- Appearing forgetful or losing things constantly
- Unable to stick to tedious or time-consuming tasks
- Difficulty listening and following instructions
- Frequently switching activities without completing them
- Difficulty organising tasks and managing time
Hyperactivity and Impulsivity Symptoms
- Unable to sit still; fidgeting, squirming, or getting up when expected to stay seated
- Excessive talking; interrupting conversations
- Unable to wait their turn; acting without thinking
- Little or no sense of danger — risk-taking behaviour
- Difficulty taking turns in games or conversations
ADHD Symptoms in Adults
ADHD often looks different in adults. Hyperactivity may be less obvious but internal restlessness is common. Adult ADHD symptoms include:
- Chronic disorganisation — missed deadlines, difficulty managing time and priorities
- Difficulty focusing — especially on uninteresting tasks; hyperfocus on engaging ones
- Forgetfulness — forgetting appointments, losing keys, missing bills
- Emotional dysregulation — rapid mood shifts, rejection sensitive dysphoria (RSD), low frustration tolerance
- Impulsivity — impulsive spending, relationship decisions, career changes
- Chronic lateness — poor time perception (“time blindness”)
- Sleep difficulties — difficulty switching off; night-owl tendencies
- Relationship difficulties — forgetting important events, seeming inattentive
- Co-existing conditions — anxiety, depression, and dyslexia commonly co-occur with ADHD
ADHD in Women and Girls
ADHD has historically been under-diagnosed in girls and women. Girls are more likely to have the inattentive type, which is less disruptive and therefore less noticed. Women with ADHD often develop masking strategies — consciously or unconsciously hiding their difficulties — which leads to exhaustion, burnout, anxiety, and depression. Many women are only diagnosed with ADHD in their 30s or 40s, sometimes after their child receives a diagnosis.
Getting an ADHD Diagnosis on the NHS
To get an NHS ADHD assessment, start with your GP. After an initial assessment, your GP can refer you to a specialist — a child and adolescent psychiatrist (CAMHS) for children, or an adult psychiatrist or specialist ADHD service for adults.
NHS waiting times for ADHD assessment have become extremely long in many areas — often 2–4 years for adults. This has led many people to pursue private assessment. Under the NHS “right to choose” scheme, you can ask your GP to refer you to a private ADHD clinic that accepts NHS funding (such as Psychiatry UK or ADHD 360), potentially reducing waiting times significantly.
Diagnosis requires:
- Detailed clinical interview covering childhood and current symptoms
- Rating scales (e.g., Conners Scale, DIVA-5 interview for adults)
- Collateral history from a parent (for adult assessment) or teacher report (for children)
- Ruling out other conditions that mimic ADHD (anxiety, thyroid disorders, sleep disorders, ASD)
NHS Treatment for ADHD
Medication
Medication is the most effective treatment for moderate-to-severe ADHD and is recommended by NICE. There are two main types:
| Medication | Type | Examples | Notes |
|---|---|---|---|
| Methylphenidate | Stimulant | Ritalin, Concerta XL, Equasym XL, Medikinet | First-line for children and adults; controlled drug; short- and long-acting formulations |
| Lisdexamfetamine | Stimulant | Vyvanse, Elvanse | First-line for adults; long-acting, lower abuse potential |
| Dexamfetamine | Stimulant | Dexedrine | Alternative stimulant; less commonly prescribed |
| Atomoxetine | Non-stimulant | Strattera | SNRI; good option for those who can’t tolerate stimulants or have anxiety; takes 4–6 weeks to work |
| Guanfacine | Non-stimulant | Intuniv | Licensed for children 6–17; useful when stimulants cause significant side effects |
ADHD medications are controlled drugs requiring a specialist to initiate. Once stable, your GP can continue prescriptions under a shared care agreement. There have been medication supply shortages in the UK (2023–2025); your pharmacist can advise on availability.
Psychological Therapies
- CBT (Cognitive Behavioural Therapy) — adapted for ADHD; addresses negative thought patterns, organisation skills, and emotional regulation
- ADHD coaching — practical skills training for time management, organisation, and goal-setting
- Parent training programmes — for parents of children with ADHD; improves behaviour management without medication
- Social skills training — especially helpful for children with ADHD
Practical Strategies for Living with ADHD
- Use external structure — alarms, timers, calendar apps, and reminders compensate for poor internal time awareness
- Break tasks down — large tasks feel overwhelming; break into tiny, manageable steps
- Body doubling — working alongside another person (even virtually via YouTube/Focusmate) significantly improves task completion
- Use the Pomodoro technique — 25 minutes focused work, 5-minute break; keeps tasks from feeling endless
- Exercise regularly — aerobic exercise raises dopamine and noradrenaline; shown to improve ADHD symptoms acutely
- Optimise sleep — sleep deprivation dramatically worsens ADHD symptoms; consistent bedtime and wind-down routine essential
- Reduce cognitive load — keep environments tidy, use the same place for keys/phone, reduce decision fatigue
ADHD Support in the UK
- ADHD UK (adhduk.co.uk) — UK-focused support and resources
- ADDISS (addiss.co.uk) — national attention deficit disorder information and support service
- CHADD UK — international organisation with UK resources
- Access to Work — government scheme that can fund ADHD coaching and workplace adjustments
- Disability Living Allowance (DLA)/PIP — ADHD may qualify you for financial support if it significantly affects daily life
This article is for informational purposes only and does not constitute medical advice. If you think you or your child may have ADHD, speak to your GP about a referral for assessment.
Related Health Guides on YourHealthXpert
Explore these related NHS-aligned health guides:
- Anxiety and Depression — anxiety and depression are significantly more common in adults with ADHD; often the presenting symptoms
- Insomnia — sleep difficulties are extremely common in ADHD; often the most debilitating symptom
- Autism Spectrum Condition — ADHD and autism frequently coexist (up to 50% of autistic people have ADHD features)
- Iron Deficiency Anaemia — iron deficiency can worsen ADHD symptoms and reduce response to stimulant medication