bacterial infection
"I woke up two days ago with the entire right side of my face swelled up like a balloon (from back of jaw to mid chin).  Normally I try to tough things out - but this was quite frankly terrifying, so I ended up going to the ER.  I was prescribed clindamycin 300mg every 6 hours, and naproxen twice daily.  The first night (after taking two doses of the clindamycin, 1 of the naproxen) the swelling had increased by about 6%.  However, a further 6 hours would have the swelling down about 50% and the pain nearly non-existant (battled with plain Advil).  This is day three on the medicine and the pain is practically gone (only sore to the touch) - as is the swelling (about down to 20%, possibly even 15%).  No side effects to speak of... yet."