Many of today's schools and school teachers opt for dustless chalk to keep hands and classrooms clean.
Casein, a milk protein, is often used in low-powder chalk. When milk allergic children inhale chalk particles containing casein, life-threatening asthma attacks and other respiratory issues can occur.
Milk allergy affects an estimated 300,000 children in the United States, according to the ACAAI. Although it has been believed the majority of children will outgrow milk allergy by age three, recent studies contradict this theory, showing school aged children are still affected. However, 80 percent of children with milk allergy will likely outgrow it by age 16.
If your child is sneezing and wheezing at school, you should see a board-certified allergist for proper testing, diagnosis and treatment.