Why do people with ADHD have higher rates of depression?

PostedNovember 19, 2025

UpdatedNovember 21, 2025

ByMy Patient Advice

Author: Harriet Winslow, BSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

People with attention deficit hyperactivity disorder (ADHD) are far more likely to experience depression than those without the condition. According to NHS guidance on adult ADHD, the challenges of managing ADHD symptoms, along with biological and emotional factors, significantly increase vulnerability to low mood. The NICE NG87 guideline on ADHD diagnosis and management highlights the importance of screening for depression in every ADHD assessment, given the high overlap between the two conditions.

How biology links ADHD and depression

ADHD and depression share similar neurobiological pathways involving dopamine and serotonin, which are key neurotransmitters that influence mood, reward processing, and motivation. Studies published in PubMed and Frontiers in Psychiatry show that deficits in dopamine signalling contribute to difficulties regulating emotions and sustaining motivation, both of which can lead to feelings of frustration and hopelessness.

Emotional regulation circuits connecting the prefrontal cortex and limbic system also function differently in ADHD. This reduced ability to control emotional responses may predispose individuals to prolonged sadness or irritability, increasing the risk of depressive symptoms over time.

Psychosocial and environmental factors

Beyond biology, people with ADHD often face repeated setbacks at school, work, or relationships. Rejection sensitivity, which is the heightened awareness of criticism or exclusion, is common and fuels chronic stress and low self-esteem. Research from Wiley (The Lancet Psychiatry) suggests that delayed ADHD diagnosis, especially in women, compounds emotional distress and increases depression rates. Environmental adversity such as bullying or trauma further raises this risk.

NICE and NHS guidance on management

Both NHS and NICE guidance recommend routine depression screening using validated questionnaires such as the PHQ-9 or the Mood and Feelings Questionnaire during ADHD assessment. Treatment should be integrated and holistic, addressing both conditions simultaneously where possible. Medication for ADHD (stimulant or non-stimulant) may be combined with cognitive behavioural therapy (CBT) or adapted CBT for ADHD, alongside psychoeducation and lifestyle support.

Key takeaway

Higher rates of depression in people with ADHD stem from both neurobiological factors and lived experience. Following NHS and NICE guidance, early recognition, regular screening, and combined psychological and medical interventions can help reduce the emotional burden and improve long-term wellbeing for individuals with ADHD and depression.

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.