title: Prevalence of Restless Legs Syndrome in Adult ADHD and Its Subtypes.
abstract: In this observational cross-sectional study, 49 subjects were assessed for sleep disorders and for ADHD symptoms. Thirty-six received an ADHD diagnosis (29: combined type (ADHD-C); 7: inattentive type). An RLS and RLS symptoms prevalence of 34.5% was found, with a higher prevalence rate in the ADHD-C subgroup, although not significantly (p = 0.066). RLS symptoms were correlated with particularly hyperactivity-impulsivity (ρ = 0.742; p: 0.000). ADHD patients with positive RLS scores reported higher scores on the ADHD-Rating scale compared with patients with negative RLS scores (Z: -2.968, p = 0.003), mainly due to higher hyperactivity-impulsivity scores (Z: -3.145; p = 0.002). Our findings show that clinicians need to be aware of RLS among adult ADHD patients, particularly those with severe hyperactivity-impulsivity symptoms.
authors.affiliation: a Pro Persona Mental Health Care , Ede , The Netherlands.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Snitselaar
authors.affiliation: b Center for Sleep-Wake Disturbances and Chronobiology Gelderse Vallei Hospital , Ede , The Netherlands.
authors.forename: Marcel G
authors.initials: MG
authors.lastname: Smits
authors.affiliation: c Pro Persona Mental Health Care , Nijmegen , The Netherlands.|d Radboud University , Nijmegen , The Netherlands.
authors.forename: Jan
authors.initials: J
authors.lastname: Spijker
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012148:Restless Legs Syndrome / Q000453:epidemiology*