Anxiety and ADHD: Overlap, Differences and Treatment

Quick answer

Common together; treat both and choose medicines carefully

ADHD involves inattention, hyperactivity and impulsivity from early life; anxiety involves excessive worry, tension and fear. They overlap in restlessness, trouble concentrating and sleep problems. Living with ADHD (forgetfulness, missed deadlines, criticism, time pressure) often leads to anxiety, and anxiety can mimic or worsen inattention. Assessment looks at whether symptoms began in childhood and persist when anxiety is controlled. Treatment combines CBT adapted for ADHD, skills coaching and, when appropriate, medication: stimulants often improve both ADHD and associated anxiety in many people, though they can worsen anxiety in some; non-stimulants and SSRIs are alternatives.

Important. If anxiety or low mood comes with hopelessness or thoughts of self-harm, seek help urgently. If you are in crisis or thinking about harming yourself, seek help right away: in the US call or text 988, in the UK call Samaritans on 116 123, in Spain call 024, or call your local emergency number.

How are ADHD and anxiety related?

Attention-deficit/hyperactivity disorder (ADHD) affects about 2.5–5% of adults and 5–7% of children. Studies show that 25–50% of adults with ADHD also meet criteria for an anxiety disorder, a higher rate than in the general population. Several mechanisms contribute: shared genetic and brain factors, the stress of managing a life with unreliable attention and executive function, repeated criticism and failure, sleep problems and the use of caffeine or other substances to cope.

Core features of ADHD

Inattention: difficulty sustaining focus, easily distracted, forgetful, losing things, poor organisation and time management.
Hyperactivity: restlessness, fidgeting, feeling driven by a motor; in adults often an inner restlessness.
Impulsivity: acting before thinking, interrupting, impatience, rash decisions.
Emotional dysregulation: quick irritability, mood swings and low frustration tolerance, common but not part of the formal criteria.
Symptoms start in childhood (before age 12), are present in more than one setting and impair functioning.

Overlapping symptoms and key differences

Restlessness and fidgeting: in ADHD it is a general drive to move; in anxiety it is tied to worry and tension.
Poor concentration: in ADHD it is a lifelong pattern with any topic that is not stimulating; in anxiety, the mind is occupied by worry and improves when worries are reduced.
Sleep problems: both cause trouble sleeping; ADHD often delays sleep timing, anxiety brings racing thoughts.
Procrastination and avoidance: in ADHD it stems from difficulty initiating and sustaining tasks; in anxiety it reflects fear of failure or discomfort.
Onset: ADHD begins in childhood; anxiety may start at any age.
Physical symptoms such as palpitations, sweating and trembling are typical of anxiety, not ADHD.

Why anxiety is common in ADHD

Living with ADHD is stressful: missing deadlines, losing items, being late and being told you are careless or lazy can create chronic worry about performance and about letting people down. Executive-function difficulties make it hard to plan, so tasks pile up, increasing anxiety. Some people develop perfectionism, over-preparing or avoidance as coping strategies. Social anxiety may arise from impulsive remarks or rejection. Anxiety can also be a side effect of some stimulant medicines, or caffeine, and sleep deprivation makes both conditions worse.

Getting the right assessment

A comprehensive evaluation by a clinician experienced in adult ADHD looks at childhood history, current symptoms, impairment, family history and other conditions (anxiety, depression, autism, learning difficulties, sleep disorders, thyroid problems, substance use). Collateral information from family or school reports helps. Anxiety may need to be treated or stabilised first if it clouds the picture, although treatment can proceed in parallel. Misdiagnosis is common: anxiety is sometimes mistaken for ADHD and vice versa.

Psychological treatment

CBT for adult ADHD: focuses on organisation, time management, planning, procrastination and unhelpful thinking.
CBT for anxiety: addresses worry, avoidance and physical symptoms, with adaptation for attention difficulties (shorter sessions, written summaries, visual reminders).
ADHD coaching and skills training for routines, prioritising and managing distractions.
Psychoeducation for the person and their family, reducing shame and misunderstanding.
Mindfulness-based approaches can help attention and emotional regulation.
Parent training and school support for children and teenagers.

Medication considerations

Stimulants (methylphenidate, amphetamines) are the most effective ADHD medicines, and in many people they reduce anxiety linked to ADHD symptoms. In some they increase anxiety, jitteriness or insomnia, so dose and timing matter, and clinicians monitor closely. Non-stimulants such as atomoxetine and viloxazine may suit people with significant anxiety, tics or substance use concerns. SSRIs or other medicines may be added for a coexisting anxiety disorder. Medication decisions should be made with a specialist who knows both conditions. Reduce caffeine, which can mimic or worsen both.

Daily-life strategies

External structure: calendars, alarms, checklists, visual reminders and a regular routine.
Break tasks into small steps with short deadlines.
Body doubling (working alongside someone) and timers to start tasks.
Declutter and designate places for keys, phone and wallet.
Exercise regularly, which improves attention and reduces anxiety.
Prioritise sleep and limit caffeine and alcohol.
Practise slow breathing and relaxation. See deep breathing for anxiety.
Be kind to yourself: replace self-criticism with problem-solving.
See TDAH en adultos (Spanish).

When to seek help

Long-standing difficulties with attention, organisation and impulsivity that affect work, study or relationships.
Constant worry, panic or avoidance, alongside attention problems.
Anxiety that began or worsened after starting a stimulant.
Low mood, hopelessness or thoughts of self-harm.
Use of alcohol or drugs to cope.
A child or teenager struggling at school with worry or inattention.

Three common situations

A woman in her 30s, always late and overwhelmed, with growing dread about work: may have ADHD with anxiety; seek a specialist assessment.

A student who cannot concentrate and fears exams: test anxiety and ADHD may both play a role; assess and support.

Someone with ADHD whose anxiety increased after a dose change: discuss timing and dose with the prescriber.

Key points to remember

ADHD and anxiety often coexist and overlap. A careful assessment and a plan that addresses both, with CBT, skills, lifestyle measures and, when appropriate, medication, leads to better outcomes. Our psychology team can help you understand and manage both.

This guide is for general information and does not replace an assessment by a qualified health professional.

Questions about anxiety and ADHD

These answers are general information and do not replace an examination or individual medical advice.

Can ADHD cause anxiety?

Living with ADHD can lead to anxiety, and the two share genetic and brain factors.

How can I tell if it is ADHD or anxiety?

ADHD starts in childhood and persists across settings; anxiety is tied to worry and fear. A specialist assessment is needed.

Do ADHD medicines worsen anxiety?

In some people, yes; in others they reduce anxiety by improving ADHD symptoms. Dose and timing matter.

Which is treated first?

Often both together; the plan depends on severity and which problem causes most impairment.

Does CBT help ADHD?

Yes, CBT adapted for ADHD improves organisation, coping and mood, alongside medication or alone.

Can children have both?

Yes, anxiety is common in children with ADHD and often improves with treatment of both.

Sources

This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.