'He was terrified of people': when gaming becomes an addiction

Huge popularity of online games sparks fears over young people's mental health

Kendal Parmar's son went from being a sporty and sociable boy who loved school, to a child who would stay in his room and rarely go outside.

The change in his personality was down to a gaming disorder that crept up on him at the age of 12, when he started secondary school. Three years later, Joseph is still struggling with the problem.