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Teen’s sadness may be sign of depression

Copyright 2002 President Fellows Harvard College behalf HMS MediServices Phoby LizGreen HMS MediServices Anthony Leader Komaroff MD Harvard Health Publications

Copyright 2002 President and Fellows of Harvard College on behalf of HMS Media Services, Photo by Liza Green, HMS Media Services, Anthony Leader Komaroff, MD, Harvard Health Publications

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Updated: December 10, 2012 6:07AM

Dear Doctor K: My daughter is a high school senior. In the last year she’s become extremely sad and uncharacteristically moody. Is she just a “normal” teenager, or could this be more serious?

Dear Reader: Many teenagers have lots of emotional ups and downs. But in some cases a teen’s sadness goes beyond normal “blues” and turns into clinical depression.

It’s more likely to be clinical depression when the sadness is severe; lasts for more than a few days; or makes it hard to function at home, school, work or play. It’s really important to recognize depression, since it can lead to drug and alcohol use, and, in some cases, to attempted suicide.

Doctors use the following symptoms to diagnose depression in adolescents:

depressed mood or irritability

decreased interest or pleasure in all or most activities

weight change (up or down) or appetite disturbance (increase or decrease)

not being able to sleep, or sleeping too much

doing things very slowly

fatigue or lack of energy

feeling worthless

difficulty concentrating, thinking or making decisions

Based on these criteria, it can be difficult to distinguish a normal teen from a depressed one. But as a parent, you can watch for warning signs that your daughter’s sadness has gone beyond normal. These include, but are not limited to:

sudden behavior changes

anger, agitation or irritability


giving away prized possessions

withdrawal from social groups

huge changes in dress and appearance

constant boredom

trouble paying attention and concentrating

extreme sensitivity to being rejected or failing at something

frequent complaints of physical symptoms without a clear physical cause

missing lots of school

trying to run away from home

If you notice these or other concerning changes, call your teen’s pediatrician as soon as possible. The pediatrician can do a basic evaluation to decide if your teen should speak with a mental-health specialist. If your teen ever expresses suicidal thoughts or feelings, take it seriously and see a physician immediately.

If you don’t see such signs of depression, then you’re probably just dealing with a “normal” teen. It’s the unusual teenager who isn’t irritable or doesn’t sleep until noon. In the past 20 years, as our ability to study the brain has expanded greatly, we’ve come to understand that a teenager’s brain is literally built somewhat differently than ours. And, for better or for worse, it will be built like ours by the time they reach adulthood.

Write to Dr. Komaroff at

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