Table 2.

Comorbility for internet addiction disorder.

Clinical conditions	Studies
Attention deficit hyperactivity disorder	Yoo et al., 2004; Ha et al., 2006; Ko et al., 2008, 2009a; Bernardi and Pallanti, 2009; Yen J. Y. et al., 2009; Griffiths, 2012; Gundogar et al., 2012; Chou et al., 2015
Depression	Young and Rogers, 1998; Shapira et al., 2000; Kim et al., 2006; Yen et al., 2007; Ko et al., 2008; Lee et al., 2008; Bernardi and Pallanti, 2009; Yen C. F. et al., 2009; Morrison and Gore, 2010; Xiuqin et al., 2010; Cheung and Wong, 2011; Tsitsika et al., 2011; Gundogar et al., 2012; Park J. W. et al., 2012
Hypomania and bipolar disorders	Shapira et al., 2000; Bernardi and Pallanti, 2009
Anxiety	Black et al., 1999; Bernardi and Pallanti, 2009
Obsessive–compulsive disorder	Pies, 2009; Carli et al., 2013
Substance abuse	Bai et al., 2001; Lam et al., 2009; Korkeila et al., 2010; Ko et al., 2012
Suicide risk	Mathy and Cooper, 2003; Kim et al., 2006
Dissociative symptoms	Bernardi and Pallanti, 2009; De Berardis et al., 2009; Canan et al., 2012
Insomnia	Xiuqin et al., 2010
Alexithymia	De Berardis et al., 2009; Yates et al., 2012; Dalbudak et al., 2013
Low self-esteem	Armstrong et al., 2000; De Berardis et al., 2009; Fioravanti et al., 2012