Sinusitis

What are sinuses?

The sinuses are cavities, or air-filled pockets, near the nasal passage. Like the nasal passage, the sinuses are lined with mucous membranes. There are four different types of sinuses:

ethmoid sinus - located inside the face, around the area of the bridge of the nose. This sinus is present at birth, and continues to grow.
maxillary sinus - located inside the face, around the area of the cheeks. This sinus is also present at birth, and continues to grow.
frontal sinus - located inside the face, in the area of the forehead. This sinus does not develop until around 7 years of age.
sphenoid sinus - located deep in the face, behind the nose. This sinus does not develop until adolescence.

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What is sinusitis?

Sinusitis is an infection of the sinuses near the nose. These infections usually occur after a cold or after an allergic inflammation. There are four types of sinusitis:

acute - symptoms of this type of infection last less than four weeks and get better with the appropriate treatment.
subacute - this type of infection does not get better with treatment initially, and symptoms last four to eight weeks.
chronic - this type of infection happens with repeated acute infections or with previous infections that were inadequately treated. These symptoms last eight weeks or longer.
recurrent - three or more episodes of acute sinusitis a year.

What causes sinusitis?

Sometimes, a sinus infection happens after an upper respiratory infection (URI) or common cold. The URI causes inflammation of the nasal passages that can block the opening of the paranasal sinuses, and result in a sinus infection. Allergies can also lead to sinusitis because of the swelling of the nasal tissue and increased production of mucus. There are other possible conditions that can block the normal flow of secretions out of the sinuses and can lead to sinusitis including the following:

abnormalities in the structure of the nose
enlarged adenoids
diving and swimming
infections from a tooth
trauma to the nose
foreign objects stuck in the nose
cleft palate
gastroesophageal reflux disease (GERD)
secondhand smoke

When the flow of secretions from the sinuses is blocked, bacteria may begin to grow. This leads to a sinus infection, or sinusitis. The most common bacteria that cause sinusitis include the following:

Streptococcus pneumonia
Haemophilus influenzae
Moraxella catarrhalis

What are the symptoms of sinusitis?

The symptoms of sinusitis depend greatly on the age of the child. The following are the most common symptoms of sinusitis. However, each child may experience symptoms differently. Symptoms may include:

younger children:

runny nose
- lasts longer than seven to 10 days
- discharge is usually thick green or yellow, but can be clear
nighttime cough
occasional daytime cough
swelling around the eyes
usually no headaches younger than 5 years of age

older children and adults:

runny nose or cold symptoms lasting longer than seven to 10 days
drip in the throat from the nose
headaches
facial discomfort
bad breath
cough
fever
sore throat
swelling around the eye, often worse in the morning

The symptoms of sinusitis may resemble other conditions or medical problems. Always consult your child's physician for a diagnosis.

How is sinusitis diagnosed?

Generally, your child’s physician can diagnose sinusitis based on your child’s symptoms and physical examination. In some situations, additional tests may be performed to confirm the diagnosis. These may include:

sinus x-rays - diagnostic test which uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film. (X-rays are not typically used, but may help assist in the diagnosis.)
computed tomography (Also called CT or CAT scan.) - a diagnostic imaging procedure that uses a combination of x-rays and computer technology to produce cross-sectional images (often called slices), both horizontally and vertically, of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general x-rays.
cultures from the sinuses - laboratory tests that involve the growing of bacteria or other microorganisms to aid in diagnosis.

Treatment for sinusitis:

Specific treatment for sinusitis will be determined by your child's physician based on:

your child's age, overall health, and medical history
extent of the infection
your child's tolerance for specific medications, procedures, or therapies
expectations for the course of the infection
your opinion or preference

Treatment of sinusitis may include the following:

antibiotics, as determined by your child's physician (antibiotics are usually given for at least 14 days)
acetaminophen (for pain or discomfort)
a decongestant (i.e., pseudoephedrine [Sudafed®]) and/or mucus thinner (i.e., guaifenesin [Robitussin®])
cool humidifier in your child's room
nasal spray (to reduce inflammation)
medications to treat GERD
surgery to remove the adenoids
endoscopic sinus surgery

Antibiotics may be withheld for 10 to 14 days, unless severe symptoms develop, such as: fever, facial pain or tenderness, or swelling around the eye. Surgery should be considered only if other treatments have failed.

Referral to an allergist/immunologist is often needed, particularly for people with chronic or recurrent sinusitis and for patients who have had sinus surgery, but still experience sinusitis.

Antihistamines do not help the symptoms of sinusitis unless an allergy is involved.

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