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What is the most common tree nut allergy?

Tree nuts Allergy.

Tree nuts are a common food allergy: in the United States, about 0.5% of the population—or about one in every 200 people is allergic to tree nuts. Tree nuts frequently cause strong allergic reactions and may cause anaphylaxis, which is a potentially life-threatening allergic reaction.

It’s possible to be allergic to just one type of tree nut, but many people are allergic to multiple different types of tree nuts. In addition, it’s common for food manufacturers to process different types of tree nuts on the same equipment, raising risks for people who are allergic. Therefore, if you have a tree nut allergy, your doctor may warn you to avoid most or all tree nuts.

Types of Tree Nuts.

The most common tree nuts include macadamia nuts, brazil nuts, cashews, almonds, walnuts, pecans, pistachios, chestnuts, hazelnuts (filberts), and pine nuts (pignoli or pinon). Less common tree nuts include beechnuts, butternuts, chinquapins, gingko, hickory nuts, lychee nuts, pili nuts and shea nuts.

Children who are allergic to multiple types of tree nuts (more than one or two) are less likely to outgrow their allergy than children who are allergic to just one type of tree nut.

Symptoms Associated with Tree Nut Allergy.

Symptoms associated with a tree nut allergy include:

  1. tingling of the lips
  2. itching of the mouth, ears and eyes
  3. oral allergy syndrome 
  4. contact dermatitis
  5. throat tightening
  6. urticaria (hives)
  7. angioedema
  8. conjunctivitis
  9. asthma (in asthmatics)
  10. abdominal pain
  11. diarrhea
  12. vomiting
  13. anaphylaxis.

Which Nut Is Not Tree Nut?

Tree nuts include almonds, Brazil nuts, cashews, hazelnuts, pecans, pistachios and walnuts. An allergy to one tree nut does not necessarily mean an individual is allergic to other tree nuts, but certain tree nuts are closely related, including cashew with pistachio and pecan with walnut.

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