How Are Substance Use Disorders Considered in ADHD Diagnosis Per DSM-5? 

The DSM-5 provides clear guidelines on how to assess and diagnose ADHD and substance use disorders, recognising that individuals with ADHD are at a higher risk of developing addiction or substance misuse problems. This is particularly relevant when diagnosing ADHD in adults, as they may turn to substances as a way of coping with symptoms like impulsivity, restlessness, and difficulty focusing. 

In the DSM-5, a key factor in diagnosing ADHD alongside substance use disorders is the timeline of symptoms. ADHD symptoms, such as inattention, hyperactivity, and impulsivity, must be present before the onset of substance misuse. However, substance use disorders, such as alcohol or drug addiction, can complicate the ADHD diagnosis, as the substance use may mask or mimic ADHD symptoms, making it more difficult to differentiate between the two conditions. 

The DSM-5 advises clinicians to evaluate the severity of both disorders and determine whether addiction or substance misuse is a consequence of untreated ADHD symptoms. This comprehensive evaluation ensures that both conditions are treated appropriately, often requiring a combination of therapy and medication for both ADHD and the substance use disorder. 

How It Helps 

Recognising the interplay between ADHD and substance use disorders helps clinicians develop a comprehensive treatment plan. By addressing both conditions simultaneously, individuals can receive the appropriate interventions that support their mental health, reduce substance misuse, and manage ADHD symptoms effectively. 

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.   

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to DSM-5 Diagnostic Guidelines.  

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.