The numbers of those who self-harm are higher than figures show, claims a trainer from Harmless, a voluntary organisation for those who self-harm.
The NSPCC have said nearly 19,000 children were admitted to hospital last year as a result of self-harming, which is a 14% rise over the last three years.
Sarah Kessling told Yasmeen Khan: “This is a very much private issue and really those numbers are going to be much much higher.
“I think for parents, for friends, it’s really difficult to know what to say and not what to say, and what happens a lot of the time is people avoid it, because they’re worried they’re going to make it worse, and that’s just not true.
“You’re breaking down the stigma by saying you’re comfortable with the topic, and you’ve giving them the opportunity to talk about their underlying distress."
Listen to the full interview to find out more