How many sinuses do I have?
Typically each person has four sinuses on each side of their face.  The maxillary sinus is located below your eye, in your cheek.  The sphenoid sinus is located in the middle of your head, behind your eyes and the ethmoid sinuses are located between your eyes.  The frontal sinus is located in your forehead.  Some people only have one frontal sinus or none at all.  This is a normal variant and is nothing to worry about.  You are born without frontal sinuses and they develop (to a varying degree) after birth.  If you do not have one, it simply did not develop.  Any or all of the sinuses can be affected by sinusitis.

* Note: The information contained in these pages is for educational purposes only. It should not be construed as individualized diagnostic and treatment advice.