Depression Say: dih-preh-shun It's normal to feel sad sometimes, but if you feel that way for a long time, and you never feel happy, it's called depression. Sometimes, it's hard to figure out what's causing a person's depression. One thing's for sure, though: if you feel depressed or if you think someone else is depressed, talk to a trusted grown-up about it. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.