The commonest causes of nasal obstruction in children are allergy and/or large adenoids. There may be an associated chronic nasal discharge.
Allergy problems are dealt with by managing the allergy with antihistamines and/or nasal steroid sprays. Enlarged adenoids may require adenoidectomy.
Children may also have similar problems to adults as below, but they are less common.
Nasal obstruction in adults maybe due to a variety of factors including;
Assessment requires a thorough examination and usually CT scans to plan appropriate treatment.