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  2. Aug 5, 2022 · Symptoms. Allergy symptoms, which depend on the substance involved, can affect your airways, sinuses and nasal passages, skin, and digestive system. Allergic reactions can range from mild to severe. In some severe cases, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause:

    • Peanuts are one of the most common cause of food-related allergy death. They can trigger anaphylaxis -- a reaction that may be fatal if not treated right away.
    • Reactions to foods are the most common cause of anaphylaxis in the United States. Shellfish, such as shrimp, lobster, and crab are triggers for some people.
    • The tiny sesame seed can cause an anaphylactic reaction. Legumes such as lentils, peas, soy beans, and other beans can also cause reactions. They’re related to the peanut, which is actually a legume.
    • In addition to peanuts, children are often allergic to wheat, milk, and eggs. Because they all can be hidden in other foods, read labels carefully.
  3. Aug 21, 2023 · Allergies are very common and can cause a wide range of symptoms depending on the type and severity of the allergy. Allergy symptoms are categorized as mild, moderate, or severe. A severe allergic reaction can cause anaphylaxis, a life-threatening medical emergency requiring emergency treatment.

    • Cathy Nelson
  4. Allergic reactions (hypersensitivity reactions) are inappropriate responses of the immune system to a normally harmless substance. Usually, allergies cause sneezing, watery and itchy eyes, a runny nose, itchy skin, and rash. Some allergic reactions, called anaphylactic reactions, are life threatening. Symptoms suggest the diagnosis, and skin ...

    • James Fernandez
  5. Dec 17, 2021 · Stinging insects like bees, wasps, fire ants, hornets, and yellow jackets are most likely to cause an allergic reaction, and reactions can be severe. If you do have an allergic reaction, it can be life-threatening, so it's important seek medical attention right away.

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