Tree Nut Allergy
en español: Alergia a los frutos secos de cáscara
Medically reviewed by: Larissa Hirsch, MD
What Is a Tree Nut Allergy?
When someone has a tree nut allergy, the body's immune system, which normally fights infections, overreacts to proteins in tree nuts. If the person drinks or eats a product that contains tree nuts, the body thinks these proteins are harmful invaders. The immune system responds by working very hard to fight off the invader. This causes an allergic reaction.