The self in the obsessive-compulsive-related disorders: hoarding disorder, body dysmorphic disorder, and trichotillomania

Th e most recent DSM saw a reclassifi cation of obsessive–compulsive disorder (OCD) as the prototypical disorder within a separate grouping that also includes hoarding disorder, body dysmorphic disorder (BDD), trichotillomania (TTM; hair pulling disorder), and skin-picking disorder (American Psychiatric Association [APA], 2013 ). This followed a long-standing debate over whether there is a spectrum of disorders sharing etiological underpinnings or phenomenology with OCD (Abramowitz, McKay, & Taylor, 2011 ; Moulding, Nedeljkovic, & Kyrios, 2011 ). While much research has highlighted the role of self in the symptomatology and treatment of OCD per se (see Ahern & Kyrios, Chapter 12 in this volume; Aardema et  al ., 2013 ; Bhar & Kyrios, 2007 ; Doron, Moulding, Kyrios, & Nedeljkovic, 2008 ; Moulding, Aardema, & O’Connor, 2014 ), less has considered the role of self in the OCD spectrum. Th is chapter aims to address this gap – specifically with reference to hoarding disorder, BDD, and TTM.