I go to school, and it's not like I don't talk to people there. I try to avoid it crowds and talking to people, but I suppose I have at least 1 friend at school. And I've had friends before, and when they get home for break we try to get together. 

But, if I think about it, I've probably spent time with friends maybe 5 times in the past year. But then again I consider myself an introvert, and I've hardly spent time with friends after school since I was 12. Is it really social isolation?