Don’t know what you’d call it, but it seems every other week there’s something which posters are irrationally panicked about.
Last month it was that we were heading for nuclear war. This week it’s monkeypox, I have no doubt that it’s going to be something else by next week.
Thing is, it’s not practical to create or even request a new topic for every situation which seems to cause panic, so maybe one paranoia topic could cover it all?