All kinds of socialization, to the point I wish not to encounter any body I know to make a talk or even say a hi, because I know it won't go well and will end up making me feel worse about myself.

Some situations worse than others? Sure. I especially hate parties and large gatherings, which sometimes I cannot avoid, especially in my country when I have to attend a relative's wedding or something similar. I feel so overwhelmed and makes me feel I must escape as soon as possible.

So, yes, all kinds of socialization. Even one to one. I feel so overwhelmed and force myself to talk. While it seems that talking to others comes naturally and pleasurable to most, I hate it. I don't like to open my mouth and talk. I feel some pain in my stomach when thinking about it