A diagnosis of FAD may be determined after assessing the history (age of onset, duration and seasonality of signs, known or suspected
environmental flea exposure) and physical examination findings (pruritus, compatible clinical signs, and lesion type and distribution pattern).
The exact amount of
flea exposure required to trigger an allergic reaction likely varies between individual animals, but we know that it does not take a heavy flea burden to elicit signs of FAD.
Even better, Bravecto kills fleas so quickly that most flea - allergic dogs have little or no flea allergy dermatitis after
a flea exposure.