A case report of adult croup: a new old problem.

Larnygeotracheobronchitis is a common disease of childhood most often associated with infection by parainfluenza virus. Although rare, adult cases have been reported. Adult croup presents similarly to the childhood version; however, the severity is usually much worse, often leading to hospitalization. Presented is the case of an 80-year-old woman with croup, which is the twelfth reported in the English literature.