Can addiction hide the signs of ADHD?

PostedNovember 25, 2025

UpdatedNovember 26, 2025

ByMy Patient Advice

Author: Victoria Rowe, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Addiction can often conceal the underlying signs of ADHD, a reality increasingly recognised in NHS and NICE guidance. Alcohol, stimulants, cannabis, and opioids can mask or mimic ADHD symptoms such as impulsivity, inattention, and emotional restlessness, making diagnosis complex for both clinicians and patients.

When substance use hides ADHD

According to NICE guideline NG87 (last reviewed May 2025), substance use can blur the boundaries between addiction and ADHD. The impulsivity and mood changes seen in withdrawal or intoxication can easily resemble core ADHD traits. Recent research published in the BMJ (2025) indicates that up to one in four people in addiction treatment may have undiagnosed ADHD, far higher than in the general population.

The NHS England ADHD Taskforce (2025) highlights that ADHD remains “under-recognised and under-supported” in addiction pathways, urging early screening and better training for clinicians across both mental health and substance misuse services.

Why diagnosis is difficult

Addiction can mask ADHD in several ways. During active use, stimulants or alcohol may temporarily reduce restlessness, while withdrawal can amplify inattention and irritability. These shifts make it difficult to pinpoint whether symptoms are due to ADHD itself or to the effects of substances. NICE and NHS shared care protocols, such as those published by Essex Partnership University NHS Foundation Trust recommend that assessments for ADHD are ideally carried out once substance misuse stabilises, using information from multiple informants (for example, family members or carers) to provide a clearer clinical picture.

The cost of missed diagnosis

When ADHD remains hidden behind addiction, people may continue self-medicating to manage restlessness or low motivation. Evidence from The BMJ and PMC confirms that untreated ADHD significantly increases the risk of substance misuse and relapse. Identifying both conditions early improves treatment engagement, emotional regulation, and recovery outcomes.

Moving towards integrated care

NICE and NHS England now call for joined-up care pathways, where ADHD and addiction teams work together. This includes early screening in addiction services, cross-sector clinician training, and use of structured interviews to distinguish persistent ADHD symptoms from temporary effects of substance use. Private assessment services such as ADHD Certify also support adults seeking clearer evaluation and post-diagnostic care alongside NHS pathways.

Takeaway

Addiction can easily hide the signs of ADHD, but awareness is growing. By recognising overlapping symptoms and assessing both conditions together, clinicians can provide more effective, compassionate care that helps people move from coping to recovery.

Victoria Rowe, MSc

Author

Victoria Rowe is a health psychologist with a Master’s in Health Psychology and a BS in Applied Psychology. She has experience as a school psychologist, conducting behavioural assessments, developing individualized education plans (IEPs), and supporting children’s mental health. Dr. Rowe has contributed to peer-reviewed research on mental health, including studies on anxiety disorders and the impact of COVID-19 on healthcare systems. Skilled in SPSS, Minitab, and academic writing, she is committed to advancing psychological knowledge and promoting well-being through evidence-based practice.

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.