Persistent depressed mood, faltering school performance, failing relations with family and friends, substance use and other negative behaviors are signs that a teenager may be depressed.
Review Date 3/6/2019
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.