Photos have appeared on social media sites that appear to show fans of some boy band self-harming after a member of the band quit last week.
One girl, Sophie Dryfield, 15, even posted pictures of herself cutting off her own head in a bid for her idol not to leave the band.
Psychologist, Dr Amber Dong said: “The teenage brain cannot cope with events like this. For a teenage girl the news that someone has left a boy band can be just as distressing as an adult hearing that their children have been murdered by a pack of wild dogs.”
A spokesman for the band said: “I strongly urge fans to be strong and not do what Sophie did, or self-harm in anyway at all.”