 [ Symptoms ] is it possible to get three sinus infections at the same time  my friend went to the dr and she told me they said she had 3 sinus infections at the same time ive had multiple sinus infections before but not all at the same time is that even possible [ Disease ] you can have three of your sinuses infected but the this is consider one infection assuming you are talking about your paranasal sinuses you have a pairs of frontal sinuses forehead maxillary sinuses below your eyes in the cheek bone an ethmoid sinuses on each side of your nose it really does not matter if you had sinus infection in all six paranasal sinuses they are treated as one i also hear people say they had double pneumonia or a double ear infection they are referring to an infection one infection that may be in both ears or in both lungs