###Human: There is a white patch behind my baby's ear. Is it curable? ###Assistant: Hello. Thanks for sharing the photographs (attachment removed to protect patient identity). I can notice the patches are forming lines. They are identified as birth marks. Just the way there are black moles present, similarly white moles are there. These birth marks do not cause any health problem. They do not have any symptoms and will remain forever. Since it is not present on face, it will not affect cosmetically. Keep a record of photographs taken regularly and observe the change in size and color of the patch. For better analysis, get it checked with a dermatologist.