Restless leg syndrome, social anxiety disorder, female sexual dysfunction, celebrity worship syndrome - it seems that a new illness is invented every week, covering every potential quirk in human behaviour.
Is the human condition becoming a medical condition?
Ten per cent of British children are regarded as having a clinically recognisable mental disorder, 34 million prescriptions for anti-depressants were written in the UK in 2007, while it is estimated that 10% of US children take Ritalin to combat behaviour problems.
Dr Tim Kendall, Joint Director of the National Collaboration Centre for Mental Health and a key government adviser is deeply concerned at what he sees as a medicalisation of a vast swathe of society.