I'd say I'm a highly sensitive person, which would give the impression of an introvert. But I don't like the definition of introversion. It just has negative connotations and I can't say that I agree that it's a real characteristic. I've been reading a lot on this lately and 'hsp' seems so much more plausible when you consider society's pressures and expectations on people to fit in to every new situation. Especially people with pre-existing conditions such as ptsd.