2020 Volume 34 Issue 3 Pages 366-369
We report a pediatric case of anaphylaxis caused by line marking powder made of eggshell. A 6-year-old boy, who has an egg allergy and atopic dermatitis, rubbed his face with line marker powdered hands during practice of a sports festival. Soon, he developed cough and urticaria. After that, his mother found that the line marking powder was made of eggshell and suspected that the powder caused his symptoms. And she put the powder on his both upper and lower limbs and back neck at home. Because dyspnea, wheezing, urticaria and redness developed at the affected area and face within 5 minutes, he took antihistamines. When he visited our emergency department in 1 hour after taking medication, dyspnea and skin symptoms were improved. Although wheezing remained, SpO2 was 100% and so no additional treatment was needed. We analyzed the properties of the powder. As a result, the ovalbumin concentration was more than 20μg/g, the particle size was distributed in the range of 0.5~1000μm, and about 10% of them had a particle size of 5μm or less. We concluded that his immediate reaction occurred when the powder was inhaled into the trachea and absorbed into the atopic skin.
