Studies about trauma often tend to focus on abuse and neglect. However important, these studies may neglect the importance of the broader community context that is often associated with trauma, and complex trauma (CT) in particular. This study aimed to investigate the effects of CT (defined in terms of experiencing abuse and/or neglect occurring in the context of relationships with caregivers), and of broader environmental adversity (i.e. exposure to community violence), in a sample of adolescents (N = 218) from a severely disadvantaged district of Lima, Peru. The study had two aims: (a) to assess the prevalence of CT and its associations with internalizing and externalizing symptoms in these adolescents, and (b) to investigate the associations between community violence and both internalizing and externalizing symptoms over and above the effects of CT. In total, 39.4% of the adolescents reported at least one type of moderate to severe trauma. There was a clear association between CT and both internalizing and externalizing symptoms. Ordinal logistic regressions showed that children who were exposed to one or more traumatic experiences were more likely to score within a higher range of internalizing and externalizing symptoms than children with no history of trauma. Finally, exposure to community violence was an important predictor of symptomatology beyond the effects of CT.Keywords: Childhood Trauma Questionnaire; complex trauma; early adversity; community violence, trauma assessment.Complex trauma (CT) concerns the consequences of multiple experiences of emotional, physical, or sexual abuse, and emotional or physical neglect at an early age within a caregiving context (Bernstein et al., 2003;Mendelsohn et al., 2011;Solomon, 1999). The effects of CT on psychological development and symptomatology have been extensively studied during the past two decades (Anda et al., 2006;Cummings & Berkowitz, 2014;Dong et al., 2004;Dube et al., 2001;Geffner & Tishelman, 2011).Pathogenic environments, in turn, refer to exposure to risky environments (Grigorenko, 2009) at different layers of social interaction, such as the household, the neighborhood, or the school. Pathogenic environments such as poverty, community violence, and household dysfunctions have been shown to negatively influence psychological development and wellbeing (Callahan et al., 2011;Cicchetti, 2004;Cicchetti & Lynch, 1993;Green et al., 2010Green et al., , 2014Hammack, Richards, Luo, Edlynn, & Roy, 2004;Ludwig et al., 2012Ludwig et al., , 2013Páez, Fernández, & Beristain, 2001;Richters & Saltzman, 1990;Taylor et al., 2006;Vanderbilt-Adriance & Shaw, 2009).Furthermore, exposure to community violence during childhood and adolescence has been linked to internalizing and externalizing problems, PTSD, low school engagement, problematic peer relationships, substance abuse, and sexual risk behaviors (Voisin & Berringer, 2015). Internalizing and externalizing symptoms following CT and exposure to violence, are related to over and under-controlled behavior pat...