My ds who is almost 8mo has had these little oblong like rings come up all over him since he was like 3mo. They were mostly in his head at first. I thought maybe ring worm but the hair never fell out. The edges would get really crusty like and peel off. He has these spots behind his knees that r really read and I am pretty sure they itch. The edges of these also get really ruff and peel off and it feels a bit sticky to the touch. I am thinking maybe a allergy? He is almost totally bfed we just started sampling food the last month but only a few times a week and nothing with dairy in it. Any thoughts?