<p><strong>What Is Sinusitis?</strong></p>
<p>Sinusitis is an inflammation, usually due to infection, of one or more of the four sets of sinus cavities within each side of the facial skeleton. When irritated, the mucous membrane lining the sinus may swell and block the small drainage channels that permit mucus to flow into the nose. The buildup in pressure often results in headache, nasal congestion, drainage and facial pain. Acute sinusitis is a common disorder that often follows a cold or flu; chronic sinusitis refers to persistent or recurrent episodes that are generally milder than acute cases. Sinusitis often subsides on its own and responds well to home treatment. Rarely, infection may spread to the eyes or brain, possibly leading to vision loss, meningitis, or brain abscess.</p>
<p><strong>Who Gets Sinusitis? </strong></p>
<p>Approximately 15% of people in the United States suffe...
An ear drainage culture is a laboratory test to check for infection-causing substances in a sample of fluid, pus, wax, or blood from the ear.
See also: Ear drainage
Culture - ear drainage
How the test is performed
A sample of ear drainage is needed. Your health care provider will use a cotton swab to collect the sample from inside the outer ear canal. In some cases, a sample is collected from the middle ear during ear surgery.
The sample is sent to a laboratory and placed on a special dish (culture media).
The lab team checks the dish every day to see if bacteria, fungi, or viruses have grown. Further tests may be done to specifically identify any substances and determine the best treatment.
How to prepare for the test
No preparation is needed for a lab culture.
How the test will feel
No pain is associated with using a cotton swab to take a sample of drainage from the outer ear. However, ear pai...
Chronic sinus infection; Chronic sinusitis
Symptoms may last for 3 months or more.
(in the front of the head or around the eyes)
around the eyes or in the forehead or cheeks
Pain in the roof of the mouth or teeth
(yellow, yellow-green, thick)
Signs and tests
The health care provider will examine you and tap lightly on your face over your sinuses. This method is called percussion . It may reveal tenderness in the area.
Normal sinuses glow when light shines directly onto them. (See: Transillumination ). If sinusitis is present, the sinuses will not glow when your doctor shines a light onto them.
Other tests that may be done include:
CT scan of the skull
MRI of the skull
These imaging tests may show ...
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