A bump is appearing on the skull of smartphone . It is big to feel. A doctor told the BBC about the bump. He said in the ten years, he has seen more with the bump. A of people aged 18 to 30 have the bump. They spend hours day bent over smartphones.
The looked at 1,200 people 18 to 86. Younger people had more skull bumps. The bumps are people bend their while looking at their phones. People bend their neck at an and it becomes . Doctors call this " neck". Doctors told to change their position if their hurts.
