Chronic sinusitis tends to start out as an acute infection found most commonly during the winter or spring when cold and pollen can aggravate the nasal airways. Acute sinusitis is a temporary infection associated with a cold or viral infection. Chronic sinusitis is present if symptoms last for more than 12 weeks. Persistent symptoms may be due to your immune system, allergies or your specific anatomy. Often chronic sinusitis will worsen people's symptoms of asthma. Therefore, treatment of chronic sinusitis will often improve a patient's asthma symptoms.
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