Is it possible to have a sinus infection in half your sinus cavities?

If your sinus are not in bad inflammation, than headache is not present. Try this: http://lnk.co/GS7RI I solve my sinus and headache problems with this remedy.

Go in the shower and breath in some steem!

A sinus infection is generally cleared up by antibiotics.

Please specify what type of infection.

Yes you can, the ears, the sinuses, the nose and the throat have common access to each other.