
20. What is an allergic reaction?
As stated above, an allergic reaction is how your body responds when it comes into contact with an allergen. A chain of events may cause a specific result in an allergic reaction (via Cleveland Clinic). Everyone reacts differently to particular allergens, which is not surprising. We said it once and will repeat it: everyone and their bodies are different.
Suppose you are prone to allergies after just one exposure to a specific allergen, such as pollen or animal dander like from a cat. In that case, your body responds by producing allergic antibodies. The antibodies find the allergens and help remove them from your system. A chemical called histamine is released and causes the symptoms you show from an allergy (via Mayo Clinic).