The most posterior (farthest toward the back of the head) of these is the sphenoid sinus. The sphenoid sinuses are located in the sphenoid bone near the optic nerve and the pituitary gland on the ...

The frontal sinuses show the most anatomic variation such as congenital absence or hypoplasia (Fig. 1). The sphenoid sinuses, located posteriorly, form last. Anatomy of Sinuses-Artist's Rendition.

Sinus infections and headaches can be triggered by viral or bacterial infections, allergies, polyps in your nose, a deviated septum, or dental problems. Secondhand smoke or even changes in air ...

Possible causes of tingling in the head include sinus infections, anxiety, headaches, diabetes, and more. Certain medications and a head injury may also cause tingling in the head. Understanding ...

Can you suggest some? -- C.C. Dear C.C.: Sinuses are hollow cavities in the skull bones. They make the head lighter and serve as resonating chambers to mellow the voice.