SinusitisDefinition Sinusitis refers to inflammation of the sinuses. This is generally caused by a viral, bacterial, or fungal infection. The sinuses are air-filled spaces in the skull (behind the forehead, cheeks, and eyes) that are lined with mucous membranes. Healthy sinuses are sterile (meaning that they contain no bacteria or other organisms) and open, allowing mucus to drain and air to circulate. When inflamed, the sinuses become blocked with mucus and can become infected. Each year, over 30 million adults and children get sinusitis. Sinusitis can be acute (lasting anywhere from 2 - 8 weeks) or chronic, with symptoms lingering much longer. See also chronic sinusitis. Causes, incidence, and risk factors Sinusitis can occur from one of these conditions:
When the sinus openings become blocked and mucus accumulates, this becomes a great breeding ground for bacteria and other organisms. Sinusitis usually follows respiratory infections, such as colds, or an allergic reaction. Some people never get sinusitis, and others develop sinusitis frequently. People more likely to get frequent sinusitis include those with cystic fibrosis and those with immune systems weakened by HIV or chemotherapy. Other risks for developing sinusitis include:
Cystic fibrosis is one of a number of diseases that prevent the cilia from working properly. Other such diseases that put you at increased risk for sinusitis include Kartagener's syndrome and immotile cilia syndrome. Symptoms The classic symptoms of acute sinusitis usually follow a cold that does not improve, or one that worsens after 5 - 7 days of symptoms. They include:
Symptoms of chronic sinusitis are the same as acute sinusitis, but tend to be milder and last longer than 8 weeks. Signs and tests Your doctor will test for sinusitis by:
Other tests that might be considered include:
However, these tests are relatively insensitive for detecting sinusitis, and are often considered unnecessary. A CT scan of the sinuses is a much better test to help diagnose sinusitis. If sinusitis is thought to involve tumor or fungal infections, an MRI of the sinuses may be necessary. If you have chronic or recurrent sinusitis, further laboratory evaluation may be necessary to look for an underlying disorder. This may involve sweat chloride tests for cystic fibrosis, ciliary function tests, blood tests for HIV or other tests for immunodeficiency, allergy testing, or nasal cytology (checking the cells in the nasal secretions). Treatment Try the following measures to help reduce congestion in your sinuses:
Be careful with over-the-counter spray nasal decongestants. They may help initially, but using them beyond 3 - 5 days can actually worsen nasal congestion. Also, for sinus pain or pressure:
If self-care measures are not working, your doctor will consider prescription medications, antibiotics, further testing, or referral to an ear, nose, and throat (ENT) specialist. Nasal corticosteroid sprays may be used to decrease swelling, especially if you have swollen structures (such as nasal polyps) or allergies. These include fluticasone (Flonase), mometasone (Nasonex), and triamcinolone (Nasacort AQ). Antibiotics are used to cure the particular infection causing sinus inflammation. Common antibiotics include ampicillin, amoxacillin, trimethoprim with sulfamethoxazole (Bactrim), Augmentin, cefuroxime, and cefprozil. Other antibiotics may be used depending on the type of organism present. Acute sinusitis should be treated for 10 - 14 days, while chronic sinusitis should be treated for 3 - 4 weeks. Surgery to clean and drain the sinuses may also be necessary, especially in patients with recurrent episodes of inflammation despite medical treatment. An ENT specialist, also known as an otolaryngologist, can perform this surgery. Most fungal sinus infections require surgery. Finally, surgical repair of a deviated septum or nasal polyps may prevent recurrence. Expectations (prognosis) Sinus infections are usually curable with self-care measures and medical treatment. If you are having recurrent attacks, you should be checked for underlying causes such as nasal polyps or other problems. Complications Although very rare, complications that may arise include:
Calling your health care provider Call your doctor if:
A green or yellow discharge does not necessarily indicate a sinus infection or the need for antibiotics. Prevention The best way to prevent sinusitis is to avoid or quickly treat flus and colds:
Additional tips for preventing sinusitis:
Illustrations
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