this is an interesting question and i'm glad you asked it. in order to develop an allergy to a substance you have to be exposed to it. in other words it's extremely rare to experience an allergic reaction to something on first exposure. (it's not impossible but it's fairly rare. ) one good example is penicillin. millions of people took penicillin as children and suffered no ill effects. many of those people today have penicillin allergies. that early exposure caused their bodies to mount an extreme immune reaction to penicillin later on. that could be what happened to you too. if a physician confirmed your allergy you need to take it to heart. allergies not only can come on later in life they can get worse over time. so that diarrhea from eating eggs today could turn into anaphylaxis eventually. you also should be aware that people with a documented egg allergy may be discouraged from getting flu shots. i'd suggest you talk with your health care provider to see if this restriction applies to you. sorry you're going through this. it's difficult to give up a well-loved food.
i always ate eggs and now i have a diagnosed allergy. how does this happen? . i am 69 and about 4 years ago i began getting very sick after eating eggs. severe cramps and very bad diarrea after only 10 minutes or so. i just had a blood test and it shows i do have an allergy to eggs. how can this happen after a lifetime of enjoying eggs. i really miss soft boiled eggs. is there a trigger for this type of allergy? i don't understand how this can happen. any ideas? . thank you