Hi, sinus infections can cause dizziness, as inflammation in the nose and sinuses can cause inflammation around the Eustachian tube, which is the tube that runs from the back of the nose to the middle ear and is responsible
for draining the middle ear of fluid. If there is
Eustachian tube dysfunction from nose or sinus inflammation, fluid can remain in the middle ear which can lead to dizziness.
If you do have a chronic sinus infection, typical antibiotic treatment is for 4-6 weeks.