Cannabis and Stimulant Use Affect ADHD Patients Differently | Research

The takeaway

Adults with ADHD who used cannabis (type 2) showed more severe general psychopathology than those using stimulants/alcohol (type 1), while stimulant/alcohol users had more legal problems and hyperactivity.

Psychiatrists, ADHD specialists, dual-diagnosis treatment providers

Cannabis-using ADHD patients showed more severe general psychopathology than stimulant/alcohol users

What the researchers found

Comparing ADHD patients with two substance use patterns, type 1 (stimulants/alcohol) showed greater hyperactivity/impulsivity and more legal problems, while type 2 (cannabis) showed more severe general psychopathology. Both dual-diagnosis types showed higher impulsiveness than ADHD patients without substance use.

Why it matters

Recognizing that different substances interact differently with ADHD symptoms could lead to more tailored treatment approaches for the large proportion of ADHD patients who also have substance use disorders.

The numbers in context

Type 1 (stimulants/alcohol) vs type 2 (cannabis) vs non-dual-diagnosis ADHD; non-DD more frequently inattentive subtype; type 1 had greater hyperactivity/impulsivity; type 2 had more severe general psychopathology; both DD types more impulsive than non-DD; type 1 had more legal problems.

How the study worked

Cross-sectional comparison of demographic, clinical, and symptom features between dual-diagnosis ADHD patients classified by substance use typology (type 1: stimulants/alcohol; type 2: cannabinoids) and ADHD patients without substance use disorders.

What this study cannot tell us

Cross-sectional design cannot determine causation; substance use classification may oversimplify complex patterns; sample sizes not specified in abstract; self-reported substance use.

How to read the evidence

Cross-sectional comparison providing preliminary evidence of substance-specific clinical profiles in ADHD.

When this study was published

Published in 2021.

The bigger picture

The distinct clinical profiles associated with different substance use patterns in ADHD suggest that substance type should be considered when designing treatment plans for dual-diagnosis patients.

Questions still open

Does treating the substance use disorder improve ADHD symptoms differently depending on the substance? Should ADHD medication choices differ based on co-occurring substance type?

Common questions

Does cannabis affect ADHD differently than other drugs?

This study suggests yes. Adults with ADHD who primarily used cannabis showed more severe overall psychiatric symptoms, while those using stimulants and alcohol had more hyperactivity, impulsivity, and legal problems.

Are ADHD patients more likely to use substances?

The association between ADHD and substance use disorders is well established. This study examined how different substance types interact with ADHD symptoms rather than overall prevalence.

Read the original research

Does Cannabis, Cocaine and Alcohol Use Impact Differently on Adult Attention Deficit/Hyperactivity Disorder Clinical Picture?

Journal of clinical medicine, 10(7)

View on PubMed ↗Publisher’s paper ↗

Citation

Spera, Vincenza; Pallucchini, Alessandro; Carli, Marco; Maiello, Marco; Maremmani, Angelo G I; Perugi, Giulio; Maremmani, Icro. (2021). Does Cannabis, Cocaine and Alcohol Use Impact Differently on Adult Attention Deficit/Hyperactivity Disorder Clinical Picture?. Journal of clinical medicine, 10(7). https://doi.org/10.3390/jcm10071481