Raised white skin bumps

[PhyllisWig]

Dd 6 has 2 areas of raised skin, one behind each knee. They are white and shiny, about half a cm each. She's had them for a couple of months at least. They don't hurt or itch.

I initially put them down to some kind of keloid scaring (she is white, massively pale in fact) but I can't remember her cutting herself there so I'm not sure what it's scarring from iyswim.

I'm loathe to take her to the dr for something if it's v minor. I do suffer from health anxiety and worry the Drs roll their eyes at me too as well as wasting their time.

But I do have a niggle. I've tried to google in a good way to put my mind at rest but can't fine a match. Any ideas?

[PhyllisWig]

I've attached a photo to assist with my paranoia.....