<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello. About 3 months ago, my 10-yr-old son began developing, out of the blue, significant crusts along the rim of his upper eyelid - just at the base of the lashes. The more I attempt to gently remove warm water washclothq-tip with aquaphor, the more it is accumulating. Could you please tell me what this might be?  <response>: Hi... by what you quote I feel that your kid might be having seborrhea of the eyelashes. This is a quite common condition in this age group and will be acquired by contact. The Other possibility is a blepharitis of the eyelids which is related to infection and inflammation. Usually eye conditions AAR best diagnosed and treated only after directly seeing them. I suggest you consult your ophthalmologist regarding this. Regards - 