It turned out that when my daughter was a baby (over 20 years ago) she had a spot on her face which would not heal. Doctors gave one cream after another. At one point, diagnosed impetigo. That wasn't it at all. She was egg allergic.
Took eggs out of her diet and raised her without touching eggs until she was about 14-ish. Then after a challenge test we found she outgrew the allergy. She then discovered that she didn't even like the food that was forbidden to her for all these years.
Upvoted.