An 80-year-old woman with chronic nasal congestion.

Nasal congestion is a common problem in outpatient allergy and immunology. Here, we present the case of an 80-year-old woman with long-standing nasal congestion of uncommon cause and discuss its diagnosis, treatment, and prognosis. Although most patients with chronic nasal congestion do not have a life-threatening condition, it is important to remain vigilant for warning signs that a rare disease is at work behind this common complaint.