Skip to main content

Sinus and Sinusitis Facts

Sinuses are paired air cavities or air spaces (pockets) in the cranial (head) bones. And they are connected to the nose on the facial part of the skull where air passes and mucus drains. However sinuses are also referred to as "paranasal sinuses".

What are Sinuses?

Sinuses are paired air cavities or air spaces (pockets) in the cranial (head) bones. And they are connected to the nose on the facial part of the skull where air passes and mucus drains... However sinuses are also referred to as "paranasal sinuses".

If the nasal passages are swollen extending to the ostium of the sinuses, air cannot enter the cavity and a vacuum is created. This causes the mucus membranes to be "tugged" away from the bones they line and hence produces pain.

The paranasal sinuses are joined to the nasal cavity via small orifices called ostia. These become blocked relatively easily by allergic inflammation, or by swelling in the nasal lining which occurs with a cold. If this happens, normal drainage of mucus within the sinuses is disrupted, and sinusitis may occur.

What is Sinusitis?

Sinusitis occurs when one or more of the sinus cavities become inflamed due to several causes such as bacteria, fungi and allergies to pollen, causing pain in the nasal area. The main symptom of sinusitis is pain and the location of this pain depends on which sinus is affected...

For acute sinusitis, symptoms include facial pain/pressure, nasal obstruction, nasal discharge, diminished sense of smell, and cough not due to asthma (in children). Additionally, sufferers of this disorder could incur fever, bad breath, fatigue, dental pain, and cough.

Cavernous sinus thrombosis is the blockage of a large vein at the base of the brain which causes a blood clot to form. The cavernous sinuses are situated behind each eye socket and on either side of the pituitary gland. Their purpose is to drain blood from the brain and face back to the heart.




     What will I receive?

Loan Information for low income singles, families, seniors and disabled. Includes home, vehicle and personal loans.


Famous People with Disabilities - Well known people with disabilities and conditions who contributed to society.


List of awareness ribbon colors and their meaning. Also see our calendar of awareness dates.


Blood Pressure Chart - What should your blood pressure be. Also see information on blood group types and compatibility.


  1. New Approach to Studying Chromosomes' Centers May Reveal Link to Down Syndrome and More
  2. Social Mobile Gaming Boosts Rehabilitation for Patients with Physical Disabilities
  3. Rebuilding Spinal Cords with Energetic Polymer Scaffold
  4. Nonprofit Disability Solutions Connects Jobseekers with Top Companies