An estimated 4 to 6 percent of U.S. children under 18 have food and other allergies, and that number has gone up significantly in recent years, though no one's quite sure why. Take a look at the rise in allergies among U.S. children, by the numbers:
1 in 20 -- The number of U.S. children that now have food allergies, according to a new survey by the Centers for Disease Control and Prevention.
50 percent -- The increase in food allergies among U.S. children since the late 1990s.
1 in 8 -- The prevelance of eczema and other skin allergies among U.S. children 18 and younger.
69 percent -- The increase in eczema and other skin allergies among U.S. children since the late 1990s.
17 percent -- The percentage of black children with eczema and other skin allergies -- the highest numbers among U.S. children.
12 percent -- The percentage of white children with eczema and other skin allergies, according to the CDC survey.
10 percent -- The percentage of Hispanic children with eczema and other skin allergies.
90 percent -- Eight types of foods account for 90 percent of all food allergies. They are cow’s milk, eggs, peanuts, tree nuts (such as walnuts, pecans, hazelnuts, almonds, cashews, pistachios, and macadamia nuts), fish, shellfish, soybeans and wheat.
30 percent -- Children with food allergies who are allergic to multiple foods.
40 percent -- Children with food allergies who have a history of severe reactions.
16 to 18 percent -- The number of children who have reported having an allergic reaction in school due to accidental food ingestion.
25 percent -- The number of severe food allergy reactions in school that occur among students without a previous food allergy diagnosis.
203,000 -- The estimated number of emergency room visits caused by food allergy reactions each year, according to the group Food Allergy Research and Education.
Click here to read in full the new survey on food and skin allergies among children by the Centers for Disease Control and Prevention.