“…Depression is known to express itself differently in adolescents compared with adults (Kaufman et al, 2001, Mueller and Orvaschel, 1997). Adolescents tend to report their mood as irritable or bored rather than depressed (Crowe et al, 2006), and adolescent depression manifests with greater comorbidity, especially with anxiety disorders, disruptive behaviors, drug abuse problems, other risk-taking behaviors (Angold and Costello, 1993, Fergusson and Woodward, 2002, Ginicola, 2007, Rohde et al, 1991, Testa and Steinberg, 2010). Moreover, onset of depression during childhood and young adolescence increases the risk of a subsequent transition into the bipolar spectrum (Geller et al, 1994, Geller et al, 2001).…”