Nasal obstruction can be a considerable nuisance that detracts from the ability of patients to enjoy their normal daily activities. While there are often multiple factors that play a role in any given patient’s congestion, it is easier to understand if the factors are divided into inflammatory causes and structural causes.
Inflammatory causes of nasal congestion and obstruction are due to swelling of the blood vessels in the nasal lining that decreases the nasal airway. A variety of triggers can cause the inflammation of the nasal lining to include viral or bacterial infection (rhinitis or rhinosinusitis), polyps, allergies, pollution or chemical irritants (such as perfume or tobacco smoke), medications, and certain medical conditions (such as pregnancy). Inflammatory or mucosal causes of nasal congestion are best treated with medical therapy, depending upon the specific cause. Antibiotics, topical steroids or decongestants, and antihistamines may all be appropriate. Please see the section regarding each specific cause.
Structural causes of nasal obstruction are due to anatomic abnormalities of bony or cartilaginous areas throughout the nasal airway. Common examples include septal deviation, enlargement of the turbinates, enlargement of tonsils and/or adenoids, nasal deformities, tumors, foreign bodies (such as beads, food and other objects), and congenital problems. Most of these structural causes will not respond to medications and will require surgical therapy for correction.