If I have a bacterial infection in my sinus cavity is it always sinusitis?

I went to see the doctor last week for terrible migraines and dizziness. He said it was a bacterial infection in my sinus cavities caused by a cold I never got over.

When I tried to Google, or search ‘bacterial infection’ all that came up was sinusitis. My doctor didn’t mention it was sinusitis though.

Does a bacterial infection in the sinus cavity necessarily make it sinusitis?

sinusitis is inflammation of the sinus cavities. This can be caused by infections or allergies. I suppose it would be possible to get an infection but not have inflammation, though it is unlikely.

Sinusitis in the absence of infection is often treated with cortisone nose sprays, though a simple saline nose spray is often just as effective.

Bacterial infections of the sinuses can be pretty serious and I assume your doctor has put you on antibiotics or sulfa drugs. Be sure to take the whole course proscribed for you and see your doctor again if you’re not 100% over it when your medication runs out.