Your body fights diseases with the help of your immune system. The immune system produces antibodies that fight the foreign substances present in your system and eliminates them.
When your immune system overreacts to stimuli even though it is completely harmless, you tend to have an allergy. When you have an allergy, your body recognizes a harmless substance as a harmful one and stars producing antibodies.
Among many allergies, pet allergies are a common occurrence. People often tend to develop allergies towards dogs and cats.
Allergic symptoms range from mild to life-threatening cases as well. Sometimes, people who have not shown any symptoms of cat allergies might suddenly develop allergies all of a sudden. To understand why people become allergic to cats, read on and find out more.