How do you know if you have depression or are stressed or just sad? I just read an article that says depression has many factors (social, financial, biological, mental, etc.), which sounds like stress, right?
I thought depression meant there was a chemical imbalance that occurs in someone's body, with no clear 'reason' for why they are depressed. If there is a 'reason', then it is sadness or grief or another condition.
Please help me understand the differences between these three (depression, sadness and stress), thanks.