I recently noticed brown crusts on my 3 year olds scalp...but it worried me greatly. I ve examined his scalp for lice but didn t really see any and he goes to daycare which is why I m nervous about lice. (Though I ve never seen an actual lice infestation in my life so I don t really know what to look for) I did gave him a bath and rubbed his scalp and brushed it...and all seemed to came off.. anything I should do at this point? what could be the cause of those brown crusts?