Unfortunately, a majority of depressed people never get the help that they need, and when depression isn't treated, it can get worse, last longer, and prevent you from getting the most out of this important time in your life. There are two kinds of depressive illness. One is the sad kind called major depression . The other is manic depression or bipolar disorder , when feeling down and depressed alternates with being speeded-up and sometimes recklessness. You should be evaluated by a professional if you have had five or more of the following symptoms for more than two weeks, or if any of these symptoms cause such a big change that you can't keep up your usual routine.
Life seems meaningless or like nothing good is ever to happen again.
You have a negative attitude a lot of the time, or it seems like you have no feelings. It's hard to make up your mind. You forget a lot of things, and it's hard to concentrate. You get irritated often. You feel restless most of the time.