Is Blepharitis caused by food alergies or any other kind of allergies?

My son for the past 5 months has been getting really bad blepharitis on-and-off on just his right eye. It's usually the upper eyelid but right now it's the bottom. He washes his face and eyes daily but still manages to get it. We are all starting to wonder if this is a food allergy or if this is an... show more My son for the past 5 months has been getting really bad blepharitis on-and-off on just his right eye. It's usually the upper eyelid but right now it's the bottom. He washes his face and eyes daily but still manages to get it. We are all starting to wonder if this is a food allergy or if this is an allergy from pollution or someting outside like flowers. Anyone know? Thanks.
2 answers 2