I have pangs of depression once, suicidal at the most. Then euphoric for the rest, it's like a cycle. During depression, you get a feeling that your chest goes hollow, as if it's draining your life. Loss of appetite, then I isolate myself in my room. I don't usually come out for like 2 days as such because every human face hurts. You get a feeling as if you are addicted to your emotion of sadness. When euphoric, You always feel you miss something vital.