The mother of a 13-year-old Queensland boy who took his own life says her son was driven to suicide because he was bullied about being gay.

Tyrone Unsworth, who died on Monday, had been subjected to bullying since he was in Year 5.

"Tyrone ended up being gay and a lot of people started picking on him," his mother, Amanda Unsworth, told The Courier Mail .

"He was a really feminine male, he loved fashion, he loved make-up and the boys always picked on him, calling him gay-boy, faggot, fairy."

She said the bullying was also physical and in one incident Tyrone required surgery after he was hit in the face with a fence paling.

Ms Unsworth said she had not reported the incident to Aspley State High School, where Tyrone attended, but Queensland Police said they were investigating the claims.

Tyrone's grandmother, Twiggy Jones, told the newspaper the attack changed the once "happy-go-lucky" boy and he feared going back to school.

"When he came out of hospital he was a different boy ... he just kept telling us all 'I don’t want to go to school, I don’t want to end up back at hospital'," she said.

Aspley State High School principal Jacquita Miller confirmed the incident had not been brought to the school's attention and expressed her condolences to the family.

"We are really sympathetic with the family, and his loved ones and peers," Ms Miller said.

"We had no reports to the school of the bullying, we really try to work with families to resolve these complex issues. I'm just so sorry and sad that we didn’t have the opportunity to help this young man."