Which symptom is typical of sinusitis?

Nasal obstruction is a hallmark symptom of sinusitis. This condition involves inflammation of the sinuses, which often leads to swelling and blockage in the nasal passages. When the sinus cavities become inflamed, the drainage can become obstructed, creating a buildup of mucus and pressure that contributes to difficulty breathing through the nose. This obstruction can also lead to other symptoms such as facial pain, pressure, and congestion, further indicating the presence of sinusitis. The association between nasal obstruction and sinusitis is particularly strong because the anatomy of the sinuses and nasal passages is closely linked; any inflammation will typically affect both areas and lead to a sensation of blockage.