Does ADHD make generalised anxiety worse? 

Many people with attention deficit hyperactivity disorder (ADHD) also experience ongoing worry, tension, or restlessness associated with generalised anxiety disorder (GAD). According to NICE guidance and NHS advice, ADHD can significantly amplify anxiety symptoms due to overlapping biological mechanisms, emotional regulation difficulties, and the real-world stressors linked to attention and organisation challenges. 

How ADHD increases anxiety risk 

Research shows that ADHD and GAD frequently co-occur, with up to one in four people with ADHD meeting criteria for generalised anxiety disorder (PubMed, 2025). This rate is several times higher than in the general population. Individuals who live with both conditions tend to experience more intense and persistent anxiety, lower confidence, and higher levels of daily stress. Adults with GAD are also more likely to have undiagnosed ADHD, which can complicate treatment and recovery (BMJ, 2024). 

Shared mechanisms and compounding stressors 

ADHD and GAD share several underlying features, including executive dysfunction, emotional dysregulation, and chronic hyperarousal. People with ADHD often find it hard to regulate thoughts and emotions, which leads to rumination and excessive self-criticism. Cognitive studies show that dopamine and noradrenaline imbalance may contribute to both ADHD symptoms and persistent worry (The Lancet Psychiatry, 2024). Everyday ADHD challenges such as disorganisation, missed deadlines, or relationship misunderstandings can further reinforce anxiety and feelings of inadequacy. 

How treatment affects anxiety 

Managing both ADHD and GAD requires a balanced, integrated approach. Stimulant or non-stimulant medications can improve attention and self-regulation, which may in turn reduce anxiety for some people. However, when doses are too high or anxiety is untreated, stimulants may heighten physical symptoms of worry such as restlessness or a racing heart (NICE NG87 recommendations). Cognitive behavioural therapy (CBT) adapted for ADHD and anxiety, alongside psychoeducation and mindfulness, helps to reduce overthinking and improve resilience. 

Key takeaway 

ADHD doesn’t directly cause generalised anxiety, but it often makes it worse by increasing mental load, emotional reactivity, and daily stress. According to NHS and NICE guidance, identifying and treating both conditions together, through tailored therapy, medication reviews, and practical coping strategies can significantly improve wellbeing, focus, and quality of life. 

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.