Container of Valium tablets, 2000.
© Science Museum / Science & Society Picture Library
People with generalised anxiety disorder (GAD) worry constantly. Some people do not know why they feel anxious, while others worry excesively about their health, money, family or work. They are always anticipating a disaster, even though they often realise their worries are unfounded. GAD starts gradually, often in childhood or adolescence, and can worsen with age. People who cannot cope with living with their anxiety can be prescribed anti-anxiety drugs such as Valium.