It was thought that the game was making our son ill, but it wasn't

William Howard, nine, was told he had a twitch in his leg due to stress from playing Minecraft. But investigations show he has mitochondrial disease - mitochondrial disease. William Howard was told by doctors his twitch in leg could be down to stress. He has now been diagnosed with mitochondrial disease, experts say.

Mihaela and Simon, from Swindon, have been told their son's seizures could be his last. It comes after it was diagnosed with one of the world's rarest diseases. It has been told that any seizure could be the last of his life.