- Walnut is one of the most common causes of allergic reactions to tree nuts.
- Walnut allergy is potentially life-threatening, increasing in prevalence, and rarely outgrown.
- The estimated prevalence of walnut allergy in the general population is as high as 0.5% and in food allergic children as high as 4%.
- Walnut and pecan nut are botanically closely related and show extensive cross-reactivity.
- Walnut allergy can appear early in life, symptoms can be elicited on first known exposure, and the dose can be very low.
- Walnut can induce food-dependent anaphylaxis elicited by exercise or other cofactors such as NSAID drugs or alcohol.
- Molecular allergy diagnostics can help to identify primary walnut sensitization in nut allergic patients.
One of the most common causes of allergic reactions to tree nuts.
- Estimated prevalence of walnut allergy in the general population is up to 0.7%
- Potentially life-threatening, increasing in prevalence, and rarely outgrown
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