2 weeks ago i noticed dents on the back of my head, 2 of them that are equally on both sides.
Its got me kinda worried, i never noticed them before.. or maybe i just never payed attention to them. They are not painful or itchy. I also had an MRI, blood test done abought 3 months ago for other purposes, results all normal.

I'm 18 years of age and don't have any family background of anything like this. It's hard to tell sometimes if they get bigger or smaller, but i feel them. Does anyone know what this might be and if its serious?