The popular online game was downloaded by 150 million people internationally this year, the Washington Post reported.
Dozed off in class because of her night-time addiction.
The Mirror reports a United Kingdom couple originally bought their daughter an Xbox in January, and it wasn't long before they noticed the girl was becoming obsessed with the game that has been downloaded millions of times around the world. Two parents in Britain are seeking professional help for their daughter's Fortnite addiction after she elected to sit in a puddle of her own urine rather than put the game down.
She would wait until after her parents had fallen asleep, not even getting up to go to the toilet as she continued playing until 5am.
'She is in therapy for the addiction after she became withdrawn, agitated and disturbed from playing up to ten hours a day - sometimes playing until dawn, wetting herself so she didn't have to leave the screen'.
'This is a serious issue which is destroying our little girl's life and someone needs to step in to ban it before it becomes an epidemic'. "We got called in by her head teacher asking if everything was okay".
Hit her father in the face when he tried to confiscate her Xbox gaming console.
Once a keen sportswoman, the youngster starting saying she was too exhausted to do gym or ballet classes and avoided going to church on Sunday with her family. The parents also said they discovered charges amounting to $67 a month to Microsoft on the family's credit card statement.
Carol's mother said that by March, her daughter showed signs of addiction.
Steve Pope, the addictions counselor who has been treating Carol and Richard's daughter, said that parents have been reaching out to him about their children, who are as young as 8, and their Fortnite addictions.
A child's Fortnite addition sent her to a rehab clinic.
And experts fear many children are at risk of developing mental health problems as a result of over-exposure to violent and addictive video games.
"I urge every parent out there to know what this game can do, how it sucks young children in and could ruin lives", the nine-year-old's mother added.
And professional gamers are making up to £500,000 (NZ$953,000) a month from live-streaming their matches for addicted children to watch.
All videogames can to become addictive, but this is more common among battle royale games.
EU Withdrawal Bill debate: Day 1
Last year Lee pressed the government to release an economic impact assessment of a hard Brexit put together by the civil service. Several pro-EU Conservative lawmakers said they would join the opposition in voting against the government.