Crohn's disease is an important cause of morbidity in Australia, with a prevalence of about 50 per 100 000 population. The disease is most common in adolescents and young adults, but can occur at any age. The cause is still unknown, but research towards finding the cause is proceeding apace, along with improvements in diagnosis and advances in therapy.
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The author is a member of the Schering-Plough Crohn's Disease Advisory Board.