More than 1,000 calls were made to a helpline for distressed children on Christmas Day.
Many of the calls to Childline were from youngsters struggling to cope with family problems and mental health issues, the ISPCC said.
Margie Roe, national manager of the ISPCC’s Childline service, said children made contact with them for a number of reasons.
“In some cases these children and young people feel they can’t talk to family and are not sure who to turn to,” she said.
The ISPCC said while most children have fun and spend time with family over Christmas, many others face untold difficulties at home.