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How long does it take for an allergic reaction to occur?

That would depend on numerous different factors such as the severity of the allergy and what the person is allergic to! ! Any Suggestions here?


  1. Sherley Reply:

    Most allergic rashes will last approximately 1 to 14 days and may resolve on their own or with treatment. Allergic reactions that are autoimmune related are referred to as "flare-ups. How Long Does it Take for Food Poisoning to Hit? Detail:

  2. Idell Reply:

    a day up to 2 weeks

  3. Noelle Reply:

    The allergic reaction happens after touching one of these plants. A reaction can also occur after contact with anything that carries the oil from the plants, including clothes, tools, animal fur, or ashes and smoke from burning plants. More:

  4. Minna Reply:

    a day up to 2 weeks More:

  5. Vanessa Reply:

    When someone’s immune system creates a hyper-sensitivity to a certain something, it creates an allergic reaction when that element is placed in or on the body. Common allergies include food, cosmetics and breathing air-borne allergens like … More:

  6. Kimberlie Reply:

    About how long does it take for an allergic reaction to first pill about 2 hours cipro to occur? I’m wondering because I took the ago and I’m getting tired and want to go to b

  7. Minerva Reply:

    I would go ahead and go to bed! Sometimes people have allergic reactions that take quite a while to develop (a week or more), but sometimes they happen more quickly! If theres a serious reaction, it should wake you up! I wouldnt worry too much about it, though!

  8. Nadene Reply:

    How long does it take for an allergic reaction to occur after eating the actual food ? Most foods will trigger a reaction within 2 hours. Rarely, it can take longer.

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