My doctor treated me like a junkie over a spider bite.

[Spider Jerusalem]

5. Probably because he's used to people asking for antibiotics for things that don't warrant them.

Which too many doctors seem to go along with just to get people to shut up. And something like that, if there's no substantial secondary infection and it's not something like a black widow or brown recluse, will get better on its own; it's a self-limiting condition, all you can do is treat pain with Tylenol/ibuprofen/possibly a topical anaestheic and keep the site of the bite clean.