Hi striking,

I think it's all just depression. Depression does sneak up on you while you're not paying attention. Suddenly, you're in it again, at least for a while.

On the surface, social situations are supposed to be fun. They can be, but, also, as social animals, our social status is important for our very survival. Even slight negative cues in such situations can be very significant and can be very threatening and stressful. When I was depressed but sort of functioning, I would often enjoy the start of social events but end up feeling horrible and trapped and helpless by the end.

- vital