A Red Panda your experiences sound like mine. Most of my symptoms I would say are internal as well. I was trying to explain this to my husband last night. The other day I was feeling like everyone at work hated me and I told him that. He just thought it was an off hand comment and told me they didn't (we work at the same place). Last night I told him all of the internal thoughts behind my statement- everyone hates me, why am I even here, no one cares about me etc.... Yet the next day I may go into work and feel like I am so popular. This is exhausting- yet on the outside I am the same even person everyday.