How old is your kid ? Being depressed is aweful but for teens I think is worse because it can show in many different ways sadness anger anxiety .
I think the most important think is to let him know from the bottom of your heart how much you love him and care about him my son has been diagnosed with bipolar disorder he is only 20 but yet I can't force him to get help:,( its so hard be strong when he is ready he will get help.