Some children with food allergies, however, will not develop obvious or visual symptoms, the researchers pointed out.
"Not all food allergy reactions start with swelling or a rash," Gupta said. "If you suspect your child has eaten something they're allergic to and you don't see a visible sign of a reaction, you need to think about what might be going on internally."
Children who may be having an allergic reaction to food should be asked if they are experiencing tightness in their throat, trouble breathing or stomach pain, the authors advised. Children having an allergic reaction also may feel dizzy or faint.
"This study shows why it's vital that children receive an accurate diagnosis, and that parents and other caregivers know the signs of a severe reaction and are equipped to respond immediately," Mary Jane Marchisotto, executive director of the Food Allergy Initiative, which provided financial support for the study, said in the news release.
The study was published online in the Journal of Allergy and Clinical Immunology.
Families can visit the Food Allergy Initiative to learn more about food allergies.
-- Mary Elizabeth Dallas
SOURCE: Northwestern University, news release, Sept. 13, 2012
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