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Allergy

What are the most common food allergies in children throughout the world?

A. Fish and shellfish

B. Cow's milk and hen's eggs

C. Sesame seed and mustard

D. Peanuts and tree nuts

Answer: B

While the prevalence of immunoglobulin E (IgE)-mediated food allergy varies throughout the world, allergy to cow's milk and hen's eggs are the most common type of food allergies throughout the world. Allergy to egg whites is estimated to be between 1.5% and 3.2% in children. Shellfish, fish, peanuts, and tree nuts are the most common cause of food allergies in adults. Sesame seed allergy is more common in Israel than in other parts of the world, and mustard allergy is mainly seen in France.

Reference: Lack G. Clinical practice. Food allergy. N Engl J Med. 2008;359(12):1252-1260. Pubmed ID: 18799559.

Which of the following food allergies usually begins at age 6 to 24 months and resolves in the majority of cases by 5 years old?

A. Cow's milk

B. Peanuts

C. Shellfish

D. Sesame seeds

Answer: A

Food allergy to cow's milk usually begins between 6 to 24 months and resolves in 76% of cases by 5 years old. Peanut allergy also begins at 6 to 24 months but is usually persistent, and only resolves in 20% of cases by 5 years old. Shellfish allergy usually begins in adulthood and is persistent. Sesame seed allergy usually begins between 6 and 36 months and is persistent in the majority of cases, with only 20% resolving by age 7.

Reference: Lack G. Clinical practice. Food allergy. N Engl J Med. 2008;359(12):1252-1260. Pubmed ID: 18799559.

What is the most common food allergen associated with fatal or near-fatal anaphylaxis?

A. Eggs

B. Shellfish

C. Peanuts

D. Dairy

Answer: C

Peanuts are the most common allergen associated with fatal or near-fatal anaphylaxis. Peanut allergy affects up to 1% of people in the United States. Risk factors associated with severity of anaphylaxis include delayed treatment with epinephrine, allergen type (peanuts, tree nuts, fish, shellfish), adolescence or young adulthood, and asthma. Exposure to peanuts in the first year of life may significantly reduce the risk of developing ...

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