... Nevus sebaceous...? I was researchin about hair loss for my lo and someone mentioned this.. I googled to see what it was and it turns out my lo has this.. Ive always wondered what it was... Its like a bald patch that she was born with.. When she was younger it was scaly and yellowish.. Kinda like cradle cap but now it just looks like a normal bald patch... Apparently it can get warts etc on it after puberty.. Anyone had any experience of these?