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How old does a baby have to be to show a peanut allergy?

4 doctors weighed in
Dr. Amrita Dosanjh
Pediatrics - Pulmonology
1 doctor agrees

In brief: Workup/mgt

Food allergies present can present early in life, including those to peanuts.
If the mother is breastfeeding and eating peanuts, the allergen may be transferred to the baby. Peanut allergies tend to present though later in childhood after exposure to eating peanut products. A CAP test may be performed on a blood sample to determine whether the infant has a peanut allergy.

In brief: Workup/mgt

Food allergies present can present early in life, including those to peanuts.
If the mother is breastfeeding and eating peanuts, the allergen may be transferred to the baby. Peanut allergies tend to present though later in childhood after exposure to eating peanut products. A CAP test may be performed on a blood sample to determine whether the infant has a peanut allergy.
Dr. Amrita Dosanjh
Dr. Amrita Dosanjh
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1 doctor agrees

In brief: With prenatal...

...Exposure, a child can (rarely ) be born already allergic.

In brief: With prenatal...

...Exposure, a child can (rarely ) be born already allergic.
Dr. Anatoly Belilovsky
Dr. Anatoly Belilovsky
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