A six-year-old boy has been left with permanent facial seizures - after playing computer games for nine hours every day.
John Nathan Lising, from Nueva Ecija in the Philippines, began suffering uncontrollable facial tics. His eyes would not stop blinking and his lips permanently shook.
John's father, Edgar, 41, and his mother Judee, 40, rushed their son to hospital where medics performed CT scans - but the results showed John had a healthy brain.
More than a week later John is still suffering with facial seizures every 20 or 30 minutes despite having stopped using his smartphone and tablet.
Edgar, a musician who also owns a conference centre, is convinced the constant seizures are down to his son's addiction to playing games on his electronic gadgets.
The did however advise Edgar and Judee to ban their son from his phone, tablet and the TV.
Medics believed the symptoms resembled Focal Seizure, a kind of seizure that only affects one half of the brain, but were unable to diagnose the condition as they said there was not enough evidence to settle on a cause.
When the seizures continued, the parents took John to a second hospital, the St Lukes Medical Centre, where medics performed an electroencephalogram scan.
Again, the results came back negative.
Judee, who owns a beauty salon, said: 'My son is really suffering and we don't know what we can do now.