I have had an allergy to all nuts (except for peanut and almonds) all my life. I get an instant vomit reaction except for wallnuts that make my eyes puff up and its like a hayfever reaction. I am now ...
ok for some reason when I eat Apples (whole ones no peeling or cutting or anything) and Tuna I seem to get the same reaction. I feel a lot of pressure in my chest and upper back. there is pressure on ...
there was a time in summer where i was sneezing everytime each day and it lasted for like a month and i sleep and wake up the next day to find my nose is stuffed (blocked) and i sneeze and sneeze and ...
No, usually not. That is too long for an allergic reaction to happen from a food you've eaten. Mine usually happens (depending on how much I consume) between a half hour to an hour after, starts with a headache, then I get hives. I have, however, gotten migraines from a specific food the next day, but 3 days later is really pushing it.
If you have an IGE mediated or "true allergy" your symptoms will show in 15 minutes to 2 hours.
If you have an intolerance, it could take a a few days to feel the effects.
Usually a sensitivity to a food will show up in 24 hours. A true allergic reaction is immediate. Throat swelling, hives, red in the face and tightness in the chest. If you have these , seek medical help now.
For me it depends upon what the food is. When I was allergic to raw fruits and vegetables, the reaction occurred in less than five minutes. For my poultry allergy, the reaction may be as long as 12 hours later.
A true allergic reaction occurs fairly quickly - from minutes to several hours from ingestion time. Reactions that occur days later are not allergic reactions - might be a food intolerance or food poisoning, or have absolutely nothing to do with food.