title: Obsessive-compulsive disorder: defining the phenotype.
abstract: Characterizing the obsessive-compulsive disorder (OCD) phenotype is important for treatment and etiologic studies. This article describes a family-study approach for identifying the spectrum of conditions related to OCD and subtyping OCD cases into homogeneous subtypes.
authors.affiliation: Department of Psychiatry and Behavioral Sciences, School of Medicine, The Johns Hopkins University, Baltimore, MD, USA.
authors.forename: Gerald
authors.initials: G
authors.lastname: Nestadt
authors.forename: Jack F
authors.initials: JF
authors.lastname: Samuels
authors.forename: Mark A
authors.initials: MA
authors.lastname: Riddle
authors.forename: O Joseph
authors.initials: OJ
authors.lastname: Bienvenu
authors.forename: Kung-Yee
authors.initials: KY
authors.lastname: Liang
authors.forename: Marco A
authors.initials: MA
authors.lastname: Grados
authors.forename: Bernadette
authors.initials: B
authors.lastname: Cullen
mesh_terms: D017668:Age of Onset; D005190:Family; D006801:Humans; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D010641:Phenotype; D012107:Research Design