Dr. Allawh explains that the cause of milia really is dependent on your age, so to further answer that question, let's break down the two classifications of milia:
Primary milia
Dr. Boakye explains that primary milia are normally seen in the neonatal stage and could be associated with genetic disease. If you're looking for answers about the milia on yourself, you're likely talking about...
Secondary milia
“Secondary milia are usually seen in older children or adults,” Dr. Boakye explains. To recap, milia bumps form when keratin becomes trapped in the top layer of the skin and could be a result of sun damage and skin resurfacing procedures as well as blistering rashes (i.e. poison ivy), according to Dr. Allawh.
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