Most people today are living extremely stressful, busy lives, so it is normal to experience tiredness some of the time. This tiredness generally resolves itself after some rest and relaxation. Increasingly though, persistent tiredness is becoming a major problem for a number of people. Fatigue is a common presenting complaint of the majority of Australians and New Zealanders, but it is also often misunderstood and at times even dismissed, particularly if there is no easily identifiable cause.