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

The most recent DSM saw a reclassification 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 selfin the OCD spectrum. This chapter aims to address this gap - specifically with reference to hoarding disorder, BDD, and TTM.