Summary

• Characterised by a progressive tremor of the upper extremities, present in posture and action, without other neurological signs or symptoms.
• The prevalence and incidence increases with age, but the condition can appear in early adulthood in those who have a family history.
• Most people are only mildly affected. Those who seek medical care are disabled to some extent and often socially handicapped by the tremor.
• There is no cure, but there are treatments that provide relief and improve quality of life. These include drug therapies and surgical procedures.