Respiratory and allergies
What are respiratory allergies?
Respiratory allergies occur when the immune system has a negative reaction to some sort of airborne substance such as dust. Although these substances are not really a danger to the body, antibodies from the immune system identify the allergen as a threat. This causes certain cells to release chemical called histamine, which leads to an allergic reaction. While each person's allergy symptoms are different, symptoms can affect the skin, eyes, or airways.