My 4 yr old ds has a yellow sort of cheesy covering over parts of his scalp. He has had it for some time but it has become worse recently. It is possible to pick it off, but I don’t do this too much as the attached hairs often come off at the root. I thought it was cradle cap and have been using special shampoo for this but it doesn’t seem to be helping. I’ve also noticed today that he has little yellow patches on his cheeks! My daughter wondered whether it could be a fungal infection? Any ideas??