Persistent sad, anxious, or "empty" mood
One of the most common symptoms of depression is a constant and overwhelming feeling of sadness. You may also just feel empty, apathetic. Anxiety often accompanies depression. It may be intense, as though one is in great danger. In the case of anxiety associated with depression, that state of tension may persist for no apparent reason.
“My real feeling was just pure numbness. I just couldn’t feel sad, I couldn’t feel happy, it was almost like I was underwater with my eyes and my ears all shut off, and I was just there. ”
—Rodolfo Palma-Lulión, College Student