Since her son Matt was an infant, Lynda Mitchell knew he had a milk allergy.
She controlled the symptoms by switching his baby formula. But when he was 1, Halloween proved horrifying. While trick-or-treating in a pumpkin costume, Matt grabbed a chocolate bar and bit through the wrapper. Although he spit out the candy, his violent allergic reaction morphed into a mess of hives, swelling and labored breathing. He ended up in the emergency room.
That was 26 years ago, but Mitchell vividly recalls the fear of that night -- and of raising a child with a condition for which there was little information.
"It was really a scary time to have a child with a food allergy," she said.
To this day, Matt is extremely careful about his diet. He carries an EpiPen to thwart a severe attack if he inadvertently eats a milk product.
New research on food allergies finds that milk allergies pose not only a medical, but also a financial burden for families.
In fact, the condition registered the highest average number of services per patient of any food allergy in 2016 -- outpacing even the widely publicized allergies to peanuts and shellfish, according to the analysis by Fair Health, a nonprofit that manages a database of private insurance claims and provides cost information to the health care industry and consumers.
Still, the study found that peanuts outranked all other single food allergens in causing severe and sometimes fatal reactions known as anaphylaxis. Peanut allergies accounted for a quarter of medical services given to treat anaphylaxis from 2007 to 2016. Anaphylactic reactions to milk products represented just 5 percent.
The data add to the mounting evidence that the number of people living with a food allergy is on the rise. From 2007 to 2016, medical services related to food allergies listed on private health insurance claims increased by 76 percent, said Robin Gelburd, president of Fair Health.
BJ Lanser, director of the pediatric food allergy program at National Jewish Health in Denver, said the causes of those allergies aren't limited to certain headline-grabbing foods.