relapsing polychondritis, a rare disease of unknown cause resulting in inflammation and destruction of cartilage with replacement by fibrous tissue. Autoimmunity may be involved in this condition. Most commonly the ears and noses of middle-aged people are affected with episodes of tender swelling, often accompanied by fever, arthralgias, and episcleritis. Consequences include floppy ears, collapsed nose, hearing loss, or hoarseness and airway obstruction because of laryngeal and tracheal cartilage involvement. Corticosteroids suppress the activity of the disease.