IS ADHD IN CHILDHOOD ASSOCIATED WITH LIFETIME HOARDING SYMPTOMS? AN EPIDEMIOLOGICAL STUDY
Contract grant sponsor: WMH; contract grant sponsor: EU-WMH; contract grant number: EAHC 20081308; contract grant sponsor: ESEMeD; contract grant number: QLG5–1999–01042; SANCO 2004123; contract grant sponsor: Piedmont Region (Italy); contract grant sponsor: Fondo de Investigación Sanitaria; Instituto de Salud Carlos III, Spain; contract grant number: FIS 00/0028; contract grant sponsor: Ministerio de Ciencia y Tecnología, Spain; contract grant number: SAF 2000–158-CE; contract grant sponsor: Departament de Salut, Generalitat de Catalunya, Spain; Instituto de Salud Carlos III; contract grant number: CIBER CB06/02/0046, RETICS RD06/0011 REM-TAP.
No authors have any competing interests.
Correspondence to: Dr. Miquel A. Fullana, Institute of Psychiatry, King's College London, London, United Kingdom. E-mail: Miguel.Fullana@kcl.ac.uk
Although hoarding symptoms have been traditionally conceptualized as part of obsessive-compulsive disorder (OCD), recent data suggest that they may be more closely related to attention-deficit hyperactivity (ADHD) symptoms and, in particular, inattention. The aim of the present epidemiological study was to investigate the association between retrospectively reported ADHD symptoms in childhood and lifetime hoarding symptoms.
Retrospectively reported childhood ADHD, and lifetime hoarding and obsessive-compulsive symptoms were assessed with the Composite International Diagnostic Interview 3.0 in a random subsample of individuals (n = 2,963) participating in a cross-sectional survey of the adult general population of nine European countries, as part of the World Mental Health (WMH) Surveys.
Lifetime hoarding symptoms were more common among individuals with childhood ADHD symptoms than those without ADHD symptoms (8.9% versus 2.7%, P = 0.024). Childhood inattention (but not hyperactivity) was associated with lifetime hoarding symptoms (OR = 6.04, 95% CI = 3.59–10.1) and this association remained significant after controlling for the presence of obsessive-compulsive symptoms.
Longitudinal studies are now needed to explore the hypothesis that inattention symptoms in childhood may be a precursor of hoarding difficulties later in life.