How long does it take to get an allergic reaction to a certain food?

have your parents schedule an appointment with your brother's allergist. it is important for you to know the answers. in the meantime, make sure you have benedryl handy for yourself, too.

It may have been a spice that you reacted to before. If youa re allergic to something, it doesn't tend to go away. Yet, you can develope allergies at any given time in your life.

From 1 seconds to several days. Sometimes it is cumulative. You can be repetitive exposed to small amounts that would not individually cause a reaction and the have a major reaction.

I have a food allergy (walnuts, no other kind of nut, just walnuts), and I can't tell right away, but within a minute or two I definately can tell.