This chapter focuses on pediatric behavioral health issues associated with traumatic brain injuries (TBIs), including concussions. Children and adolescents who have sustained TBIs often experience significant and persistent cognitive, social, emotional, and behavioral consequences; these can be magnified if the children had pre-existing difficulties. In addition to describing how TBIs can affect children, the chapter emphasizes interdisciplinary collaboration and care coordination across systems, including the home, school, community, and healthcare settings.