Clinical Depression Signs And Symptoms Can Someone Tell Me If My Son Is Depressed?

Can someone tell me if my son is depressed? - clinical depression signs and symptoms

Can someone please give me the basic symptoms and signs of clinical depression, my son has done lately, and I do not know what to do now. I'm not really sure, but he looked very strange in the last 4 months and I consider crazy, now do something, shame on me.

Please help.