A growth had to be at least 5mm-long to be counted as an external occipital protuberance, with anything bigger than 10mm classifed as enlarged. Of the group, 41 percent had the lump, with 10 ...

They believe the growth of a "external occipital protuberance" has become more frequent because we spend so much time on our phones. When we hunch over a screen, we put pressure on the spot where ...