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Research Article
Eur Addict Res 2020;26:274–282
Adult Attention-Deficit/Hyperactivity Disorder
and Quality of Life in High-Dose Benzodiazepine
and Related Z-Drug Users
Fabio Lugoboni
a Anna Bertoldi
a Rebecca Casari
a Elisa Mantovani
b
Laura Morbioli
a, b Stefano Tamburin
b
aDepartment of Medicine, Addiction Medicine Unit, Verona University Hospital, Verona, Italy; bDepartment of
Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
Received: January 27, 2020
Accepted: April 10, 2020
Published online: June 22, 2020
Dr. Stefano Tamburin
Department of Neurosciences, Biomedicine and Movement Sciences
University of Verona
Piazzale Scuro 10, IT–37134 Verona (Italy)
stefano.tamburin @ univr.it
© 2020 S. Karger AG, Basel
karger@karger.com
www.karger.com/ear
DOI: 10.1159/000507852
Keywords
Addiction · Attention-deficit/hyperactivity disorder ·
Benzodiazepine · Patient-centered outcomes · Quality of
life · Substance use disorder
Abstract
Background: Problematic high-dose benzodiazepine (BZD)
and related Z-drug use for a long period is a substance use
disorder previously found to be associated with adult atten-
tion-deficit/hyperactivity disorder (ADHD) and worse quality
of life (QoL). Whether adult ADHD impacts QoL in high-dose
BZD/Z-drug users has not been explored. Aim: The aim of
the study was to explore the impact of adult ADHD on QoL
in high-dose BZD and related Z-drug users. Methods: We re-
cruited 393 patients (205 men and 188 women) consecutive-
ly admitted to the Department of Medicine, Addiction Med-
icine Unit, Verona University Hospital, Italy, from July 2016 to
July 2019 for detoxification from high-dose BZD or Z-drug
dependence. Demographic and clinical variables and QoL
measures were recorded. The World Health Organization
ADHD Self-Report Scale version 1.1 Symptom Checklist Part
A was used to detect adult ADHD. Results: In our sample,
39.4% of patients were positive to adult ADHD testing
(ADHD+), with some clinical features differing in comparison
to patients negative to ADHD testing (ADHD−). QoL was
worse in high-dose BZD/Z-drug users than the general pop-
ulation. The ADHD+ group showed significantly worse QoL
measures than the ADHD− group. Multivariate analysis, in-
cluding potential covariates showed adult ADHD and age to
have the most robust and consistent positive effect for age
(i.e., higher QoL) and negative effect for ADHD (i.e., lower
QoL) on QoL measures. Conclusions: Adult ADHD is associ-
ated with worse QoL measures in high-dose BZD/Z-drug us-
ers. Future studies should explore whether appropriate BZD/
Z-drug detoxification might improve QoL measures and
whether the most appropriate detoxification protocol dif-
fers in ADHD+ versus ADHD− populations.
© 2020 S. Karger AG, Basel
Introduction
Benzodiazepines (BZDs) and BZD-related Z-drugs are
gamma-amino-butyric acid type A-positive allosteric
modulators that are widely prescribed worldwide for anx-
iety and insomnia [1, 2]. Long-term use of BZDs and re-
lated Z-drugs is reported in 6–76% of patients [3], with
moderate-to-severe symptoms of withdrawal in 15–44%
[4] and misuse or dependence in 3–4% [1].
The problematic use of BZDs and Z-drugs at high dos-
es and for a long period of time is a substance use disorder