ADHD-pain: Characteristics of chronic pain and association with muscular dysregulation in adults with ADHD

Author:

Udal Anne Beate Helseth1,Stray Liv Larsen2,Stray Torstein2,Bertelsen Thomas Bjerregaard2,Pripp Are Hugo3,Egeland Jens4

Affiliation:

1. Department of Mental Health, Sørlandet Hospital Trust , Arendal , Norway

2. Department of Mental Health, Sorlandet Hospital Trust , Kristiansand , Norway

3. Department of Biostatistics, Oslo University Hospital , Oslo , Norway

4. Department of Psychology, Vestfold Hospital Trust, Norway OUS University of Oslo , Tønsberg , Norway

Abstract

Abstract Objectives A high incidence of attention-deficit hyperactivity disorder (ADHD) has been reported in chronic pain (ChP) patients. Furthermore, an association between ChP and muscular dysregulation has been reported in adults with ADHD. The present study investigated whether ADHD was more prevalent among psychiatric outpatients with ChP than those without ChP, and if there was an association between ChP, muscular dysregulation and characteristics of pain in patients with ADHD. Methods One-hundred and twenty-one individuals remitted to an outpatient psychiatry unit took part in this naturalistic epidemiological cross-sectional study. They were assessed with a pain self-report form (localization, intensity, and onset) and a test of muscle dysregulation (the Motor Function Neurological Assessment). Prevalence of ADHD among patients with ChP, as well as the qualitative characteristics of ChP within the ADHDgroup are reported. Both ChP and pain intensity correlated with muscular dysregulation through Spearman’s rho analysis. Additionally, the relationship between various diagnostic categories (ADHD, affective disorders, anxiety, or personality disorders) and incidence of axial pain was evaluated in logistic regression. Results ADHD was significantly more prevalent in patients with ChP, than in patients without ChP. In the ADHD group, ChP and pain intensity was associated with muscular dysregulation, particularly with high muscle tone. ChP was more axial and widespread, than for the patients without ADHD, and started at an early age. ADHD diagnosis predicted axial pain, whereas affective-, anxiety-, or personality disorders did not. Conclusions The study suggests that ChP in ADHD is associated with muscular dysregulation and is qualitatively different from ChP in psychiatric patients without ADHD. These findings may lead to further understanding of potential mechanisms involved in ADHD and ChP, and in turn to new treatment strategies for both disorders.

Publisher

Walter de Gruyter GmbH

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