Former stalker: 'It was like an impulse'
A new medical service for England and Wales specialising in treating stalkers is due to be launched.
The National Stalking Clinic is believed to be the first of its kind in the world.
According to the British Crime Survey one in five women and one in 10 men aged 16 or over have been victims of stalking in its various guises.
One former stalker from Australia - who wished to remain anonymous - told the BBC's World Update programme why she thought the clinic was a good idea.