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1 Ethmoid Sinus Cavities â are located in-between the eyes. 2  An infection in these sinus cavities can cause pain in-between the eyes. 3  This pain can extend to the forehead and cause headaches. 4  Frontal Sinus Cavities â are found above the eye and eye bone.
The same things that can cause swelling in the nose, allergies or infection, can also affect the sinuses. When the tissue inside the sinuses swells, mucus increases. Over time, air trapped inside swollen sinuses can create painful pressure inside the head. This is a sinus headache.