The American Psychiatric Association opened the door for the acknowledgement of Behavioral Addictions when they "Non-Substance-Related Disorders" section of the "Substance-Related and Addictive Disorders" chapter of the DSM-5. Currently Gambling Disorder is the only disorder listed in this chapter, however Internet Gaming Disorder is listed in the appendix as a Condition for Further Study. Other Behavioral Addictions under active investigation include:
Exercise (Costa, Cuzzocrea, Hausenblas, Larcan, & Oliva, 2012; Freimuth, Moniz, & Kim, 2011; Landolfi, 2013; Lichtenstein, Larsen, Christiansen, Støving, & Bredahl, 2014; Müller et al., 2014; Weinstein & Weinstein, 2013),
Shopping/spending/buying (Black, Shaw, McCormick, Bayless, & Allen, 2012; Hartston, 2012; Lejoyeux & Weinstein, 2010; Murali, Ray, & Shaffiullha, 2012; Rose & Dhandayudham, 2014; Starcke, Schlereth, Domass, Schöler, & Brand, 2013),
Television (Sussman & Moran, 2013).
The concept of food as addictive has been particularly studied in recent years, including heavy research into the neurobiological components of binge eating and obesity (Ahmed, Guillem, & Vandaele, 2013; Balodis, Grilo, et al., 2013; Balodis, Kober, et al., 2013; Blum, Oscar-Berman, Barh, Giordano, & Gold, 2013; Clark & Saules, 2013; Gearhardt, Boswell, & Potenza, 2014; Rodgers, Melioli, Laconi, Bui, & Chabrol, 2013; Volkow, Wang, Tomasi, & Baler, 2013a; Volkow, Wang, Tomasi, & Baler, 2013b).
workaholism (Andreassen, 2013; Andreassen, Griffiths, Hetland, & Pallesen, 2012; Sussman, 2012),
Nonsuicidal self-injury (NSSI) ("cutting") (Franklin et al., 2010),
Social networking generally (Andreassen & Pallesen, 2013; Emre & İŞBULAN, 2012; Karaiskos, Tzavellas, Balta, & Paparrigopoulos, 2010; Kuss & Griffiths, 2011; Salehan & Negahban, 2013; Weiss & Samenow, 2010),
Facebook specifically (Andreassen, Torsheim, Brunborg, & Pallesen, 2012; Carmody, 2012; Griffiths, 2012; Kittinger, Correia, & Irons, 2012; Koc & Gulyagci, 2013; Rosen, Whaling, Rab, Carrier, & Cheever, 2013).
Cell phone addiction (Hong, Chiu, & Huang, 2012; Khang, Woo, & Kim, 2012; Koo, 2013),
Tanning addiction (Hillhouse et al., 2012; Kourosh, Harrington, & Adinoff, 2010; Mosher & Danoff-Burg, 2010)
(I will update these references with links to their pubmed articles shortly.