My experience is that a lot of people that are raised in homes with some form of addiction or other kind of dysfunctionality can have symptoms similar to depression while the actual need is to treat the traumas from family dysfunction. If you suspect this and would like to seek help you could have a look at the 14 common traits of "adult children" http://www.adultchildren.org/lit-Laundry_List#1 I identified and found a way out of anxiety by attending those meetings.