I think it's important to remember that depression distorts our perceptions of people around us. We are more likely to assume people are giving us the cold shoulder when in reality they may not be.

I've found from experience that when people back off and seem elusive to your depressed moods, it's not because they don't care, it's actually because they care a great deal and are worried about you but don't know how to handle the situation or help. So they don't do anything at all out of fear of doing or saying something wrong and making you feel worse.