Teen depression can be a slumbering monster

They're virtually inescapable, those telltale signs of adolescence: emotional turmoil, mood swings, gloomy introspection, great drama, heightened sensitivity, rebellion and behavioral experimentation.

It can be tough being a teenager and possibly even tougher being around one. So how is a parent or other concerned adult to know if this child is going through the natural rigors of adolescence or experiencing something more sinister, like depression?

The following checklist may be helpful. People with depression often exhibit some or all of these symptoms:

crying more often than in the past;

fee...