Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

that would be my first thought.
of course, not knowing any details makes it impossible to determine.
Please let us know a little more info before I make any more comments :)
Hugs
Please let us know a little more info before I make any more comments :)
Hugs
Sorry.....
Some kids do it because they don't get along with their parents. Others do it because they are out of control and don't want to hear their parents trying to help them.
From there it goes on pure speculation as to what is wrong, who is wrong and all that.
So to speculate that you are involved in this personally, I say hugs to you and I hope you are able to work it out.