swelling is more or less a bump that grows on a part of your body. swellings can be caused by about a million things, std's, bruises, or skin irratation to name a few.
it's your eyes trying to force their way out of your head. if you don't do something about it, like pushing your eyes back, they will fall out in a few hours. Go to a doctor immediately!!!, it may be...
Possibly an indicator of an infected IV site -- or that the IV either missed or pierced through the vein and the injectant was accidentally delivered at least partially subcutaneously instead of IV....
you swish salt water. Do not swallow! it depends on how bad the swelling is in your mouth. most swollen gums you swish salt water every night for up to 2 weeks.