Ok. So I apologise for lack of photos. It was so small that I couldn't get a good one.
Need some ideas! DD had a white lump on her chin that was getting steadily a little bigger. It looked almost like a spot but with no head.
Squeezed it and a complete sphere popped out. It was fairly hard and looked as if it was covered in a kind of membrane. Almost looked like a mini eyeball. Whole are bled a bit but that's it.
What on earth could it have been? I vaguely remember my DS having one too and after I popped it, it never came back or spread.