Then the normal bacteria in the sinus and nasal tracts overgrow and cause an infection. Cold air sinusitis produces symptoms when the person is exposed to cold air. Aspirin sensitivity sinusitis may occur in some individuals when they take medicines containing aspirin. Symptoms of sinusitis vary, depending on the cause and type of sinusitis. Sometimes an episode can last 21 days.
Viral sinusitis is common in the fall, winter, and early spring.
The symptoms of bacterial sinusitis follow one of three patterns. The most common is symptoms that worsen over time. The second pattern is symptoms that last longer than 3 weeks. This is often described as a cold that won't go away. The third pattern is the sudden onset of severe upper respiratory symptoms.