If you have chronic sinus for many months,your sinus infection spreads to eustachian tube.When you have the infection in eustachian tube,then obviously you will get ear pain.For chronic sinus,better you get surgery(Functional Endoscopic sinus surgey).

This is a disease for your vet to take care of.

you can take amoxicillin (type of penicillin) for mild sinus infections. it is a narrow spectrum antibiotic. for more serious cases, use ciprofloxacin

BINGO, doll! not for most sufferers they r not!

paranasal sinus include frontal sinus, the maxillary sinus, the ethmodial sinuses, and the spheniodal sinus.