whoisdeman...yeah you are coming off like as ass. This board is to ask questions and get educated on topics concerning AS. How the hell would I know what causes an injection site to swell and a lump to form if it never happened to me and I never asked about it? Are you born with this knowledge or something? Just because I'm experienced in AS doesn't mean I know everything there is to know. The reason I'm bringing this up is, once again, b/c it NEVER HAPPENED TO ME BEFORE, and I'm curious. Sorry for asking.