I only noticed this a few days ago, didn't think much of it until I read it might be a fungal infection of sorts? I tried to pick bits of it off but the hair came out with it (as in it came out really too easily). The flakes are quite big in places so it's not dandruff. And it's only on the top of his head. He doesn't seem in any discomfort but doesn't like me poking around. He is 20 months old, any advice? Thanks