For most people, dog allergies are a mild source of discomfort. They cause runny noses, respiratory distress, sneezing, and watery eyes.
An allergic reaction occurs when a person’s immune system overreacts to an allergen. In cases of dog allergies, this allergen can be found in the dog’s saliva, urine, and dander.
You won’t find the proteins in the dog’s hair, although a dog’s coat can hold dander and other potential allergens.
When these allergen proteins come in contact with a person’s immune system, the immune system responds by releasing a flood of histamines.
Histamines, along with other chemicals, cause the classic allergy symptoms most people experience. They may have a stuffy nose, sinus pressure, watery eyes, or trouble breathing.
Severe allergies can be deadly, though. Even though a pet allergy doesn’t tend to be deadly on its own, a person could die if they go into anaphylactic shock.
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