The investigators will conduct a prospective study and a randomized controlled trial (RCT) involving children and adolescents presenting with a primary mental health (MH) concern to the emergency departments (EDs) of Children's Hospitals and Clinics of Minnesota (CH). The investigators will characterize the primary MH concerns of 800 patients and assess their baseline access to and utilization of external resources. All enrolled patients will be followed 3-months after their initial visit to determine ED revisits and identify factors associated with connection to outpatient care. The RCT portion of the study will involve 200 patients discharged from the ED with a referral to an outpatient MH provider, and will test a novel text-message communication method by which parents/caregivers can be encouraged to complete follow-up care for their child. The experimental group will receive tailored text message reminders regarding follow-up appointments.