Sinusitis is inflammation or swelling of the sinuses caused by blockage that allows bacteria to grow. Common causes include colds, allergies, and non-allergic rhinitis. Symptoms include thick nasal discharge, facial pain, headache, and congestion. Diagnosis involves a physical exam and potentially imaging of the sinuses. Treatment involves medications to reduce swelling and antibiotics if symptoms persist over 10 days.

1. SINUSITIS
What are the sinuses?
What is sinusitis?
What causes it?
Symptoms ?
Treatment

2. What are sinuses ?
 Sinuses are hollow spaces inside the bones filled
with air.
 They make the bone lighter

3. What Is a Sinus Infection?
It's inflammation or swelling of your sinuses. When
they become blocked and filled with fluid, bacteria
can grow there and cause infection.
You may hear your doctor refer to it as sinusitis.

4. Comparison of a normal and inflamed sinus

5. What Causes It?
 Any condition that blocks off the drainage channels of
your sinuses can cause a sinus infection, such as:
 Colds
 Allergies such as hay fever
 Non-allergic rhinitis (symptoms that are like an
allergy but don't have a known cause)
 Nasal polyps (small growths in the lining of your nose)
 A sinus infection may start after a cold. It can also
happen because of something called a deviated septum,
which refers to a shift in your nasal cavity.

6. What Are the Symptoms of a Sinus Infection?
 Thick, yellow, foul-smelling discharge from your
nose
 Pressure or pain around your face and eyes
 Headache (generally in the forehead area)
 Blockage in your nose
 Congestion
 Post-nasal drip
 A cold that won't go away or gets worse
 Fever or cough

9.  Your doctor will give you a physical exam and take
your medical history. You might get an X-ray or
a CT scan of your sinuses.
 Your doctor may prescribe medication. He may
recommend antibiotics if your symptoms go on for
more than 10 days.
 Decongestants and other drugs help lessen the
swelling in your sinuses and nasal passages.
How Is a Sinus Infection Diagnosed and Treated?