A paranoia that my entire acquaintance is in an agreement to act as if I am a normal person when really I have a serious defect: whether it's mental or social or I'm just an undesirable person.

I used to have this fear when I was a child and I thought my mom "hired" my friends; it has resurfaced after a recent traumatic experience. Is it just paranoia or is there a name for this?

Paranoia simply put is baseless or excessive suspicion of the motives of others. Usually paranoia is symptomatic of an underlying or primary disorder. As to the specific items you mention being a syndrome (cluster of defining symptoms) invariantly identified with a specific disorder.. they are not. Must be interpreted within a broader context.

In short, the information you provided does not constitute a separate entity but may very well result from of an underlying condition.

Thank you. Your last sentence that my fears must be interpreted within a broader context, may I ask what you mean? Would it require interpretation between me and a professional? I don't really want to seek professional therapy, but more so I don't want to push people away because I'm afraid of them...
Thanks and sorry for asking more questions.

Paranoia has become a cultural cliché quite apart from it's clinical definition. So it's difficult to interpret conversationally. Based on the brief information provided I believe it would be advisable to obtain professional assistance in working through problems.

That doesn't necessarily mean a psychiatrist or even medical intervention. A trained counselor would probably be just as effective. Simply some professional trained to 1) assess and 2) treat or refer to appropriate treatment. It isn't a cumbersome or frightening process. But I would seek professional guidance to address and dispose of your concerns once and for all.