6. Tree Nuts
Another food group that can cause allergies in children are tree nuts. Almonds, cashews, walnuts can cause allergic reactions as they are, but also as an ingredient. Things are pretty serious with allergies to nuts since they can cause severe reactions, including anaphylaxis that can be fatal for your child. Thankfully, however, allergies to this food group are outgrown by adulthood, so at least there’s that.