Hi Hun, I tried to find some info by googling but all that came up was infection symptoms but it was more so a generalised swelling and redness that seems associated with infection and not really a small mark like you have? (I’m no expert though!).. I took a look at ur pic, i don’t know what it could be but I would def call your pc to check it out, just to be on safe side. Other than that your dolls look amazing. Hope you get that red mark Sussed soon x