Flea Bite
Allergy
in Cats
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| General Information
Signs of flea bite allergy result from the cat's hypersensitivity
(allergy) to flea saliva. In an allergic cat, the bite of only one
flea may cause a serious problem. Extensive skin damage may result
from the cat's biting, licking and scratching. Though flea bite
allergy can be treated, it often recurs since: a) flea eggs may hatch
up to 1 year after being deposited in the environment; b) most of the
flea's life cycle occurs off the cat; c) your cat's environment may
be contaminated with fleas; and d) even an occasional flea bite can
trigger the allergic reaction.
Flea allergies are most troublesome in the summer and fall in areas
with cold winters and warm summers. In warm climates or in heated,
flea-infested houses, flea allergy may occur throughout the year.
In cats, the main signs of flea allergy are excessive hair loss and
small red papules with reddish-brown crusts. Sores are most
prevalent around the neck, lower back, base of the tail, and abdomen.
Important Points in Treatment
1. Flea allergies usually worsen as animals age. Signs may begin
earlier in the flea season and last longer. Also, skin reactions
generally become more severe.
2. Treatment includes flea control on the pet and in the
environment, and suppression of the allergic reaction. Occasionally
desensitization of the cat is attempted.
3. Desensitization ("allergy shots") to flea saliva is
controversial. In some cases, good results are achieved, while other
cats fail to respond. The doctor will discuss the advisability of
desensitization for your cat.
Notify the Doctor if Any of the Following Occur:
* Your cat damages its skin by biting and scratching.
* Your cat's skin becomes red, hot or puffy, or oozes fluid.
* Your cat's condition recurs after treatment.
* Your cat's general health changes.
 
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