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Allergens produced primarily in the cat’s salivary and sebaceous (skin) glands are responsible for triggering a reaction in allergic individuals.
These allergens are transferred to the hair and skin when a cat grooms and spread into the environment on shed hair and dander. Although the cat’s hair can carry the allergens, the hair itself is not the originating cause of allergies to cats.
When most people have an allergic reaction to cats, they are usually responding to one allergen in particular, known as Fel d 1.
