In 2010, 12.6% of children (9.4 million) suffered
from skin allergies, 11.6% (8.6 million) from respiratory allergies,
9.5% (7.1 million) from hay fever, and 4.6% (3.4 million) from food
In an allergic response, the immune system misidentifies a substance as harmful, triggering an adverse reaction.
Hives are the common term for a skin condition known as urticaria. These red, swollen, and itchy welts appear suddenly on the skin’s surface in reaction to the systemic or topical stimulation of the immune system.