The most common
cause of acute sinusitis is a viral infection associated with the common cold. Bacterial
sinusitis occurs much less commonly, in only 0.5 to 2 percent of cases, usually
as a complication of viral sinusitis. The correct antibiotic can seem like a
miracle cure but antibiotics are only effective against bacteria. An acute
bacterial infection can be suspected if the patient has been sick for more than
ten days without improvement, has a fever greater than 102 degrees or was
initially getting better and then got suddenly worse.
Patients who have
symptoms for fewer than ten days without a fever should have supportive care.
This includes pain relief with acetaminophen or ibuprofen, saline nasal
irrigation and fluids. Breathing up steam can be very helpful. Medications to
thin secretions (such as guaifenesin) may help to clear mucus. Decongestants
are usually not helpful and can have side-effects. Antihistamines only work if
there is an allergic component. Nasal steroids (steroids delivered by a nasal
spray) can help to reduce swelling inside the nose. These prescription
medications have few side effects and dramatically relieve symptoms in most
people.
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