Sometimes the depression comes first and people try drugs as a way to escape it. Either problem can make the other worse and lead to bigger trouble, like addiction or flunking school. Here is a list of the symptoms. Remember, symptoms can be different from person to person and not everyone will have all the same symptoms. You don't feel like doing a lot of the things you used to like - music, sports, being with friends, going out, etc.
Life seems meaningless or like nothing good is ever going to happen again.
You have a negative attitude a lot of the time, or it seems like you have no feelings. You sleep too much or too little. You are restless and fidgety. It's hard to make up your mind. You forget lots of things, and it's hard to concentrate.