Are these signs of TEENAGE depression?

Tiredness Feeling empty Irritable Easily frustrated Unmotivated Sadness Loss if interest Not caring about things you use to care for Feel useless Wanting to cry at everything Stressed out Always feeling guilty Mood swings This has been going on for 2 weeks now and a few months on and off, but these past twoWeekss ive [...] http://bit.ly/nhU9Qt