Microsoft word - c-flea allergy.doc


What are allergies, and how do they affect dogs?
One of the most common conditions affecting dogs is allergy. In the allergic state, the dog's immune system "overreacts" to foreign substances (allergens or antigens) to which it is exposed. These overreactions are manifested in three ways. The most common is itching of the skin, either localised (one area) or generalised (all over the dog). Another manifestation involves the respiratory system and may result in coughing, sneezing, and/or wheezing. Sometimes, there may be an associated nasal or ocular (eye) discharge. The third manifestation involves the digestive system, resulting in vomiting or diarrhoea. The specific response that occurs is related to the allergen and the individual animal’s immune system. What is meant by the term flea allergy?
In spite of common belief, a normal dog experiences only minor skin irritation in response to flea bites. Even in the presence of dozens of fleas, there will be very little itching. On the other hand, the flea allergic dog has a severe, itch-producing reaction to flea bites. This occurs because the dog develops an allergic response to the flea's saliva. When the dog is bitten, flea saliva is deposited in the skin. Just one bite causes intense itching and this is of a long lasting nature.
What does this reaction do to the dog?

The dog's response to the intense itching is to chew, lick, or scratch. This causes hair loss and can lead to open sores or scabs on the skin, allowing a secondary bacterial infection to begin. The area most commonly involved is over the rump (just in front of the tail). This is probably because fleas find this part of the dog more desirable. Many flea-allergic dogs also chew or lick the hair off their legs.
What is the proper treatment?

The most important treatment for flea allergy is to get the dog away from all fleas. Therefore, strict flea control is mandatory and this involves ensuring the dog is flea-free and also removing fleas from the environment. There are many products available for flea control, and many work in entirely different manners. In some cases, multiple products may be needed. Some are used on the dog and some on the dog's Arthur Webster & Associates Pty Ltd P O Box 438, PYMBLE NSW 2073 Australia environment. Unfortunately, complete flea control is invariably difficult, particularly with dogs living outdoors in summertime when the weather is warm and humid, where a new population of fleas can hatch out every 7 days. Some dogs can be desensitised to the adverse effects of flea bites. Flea saliva extract (flea antigen) is injected into the dog in tiny amounts over a prolonged period of time. This is an attempt to reprogram the dog's immune system so it no longer over-reacts to flea bites. If successful, itching no longer occurs or is less intense when the dog is bitten. However, this approach is only successful in less than 30% of cases. When strict flea control is not possible, corticosteroids can be used to block the allergic reaction and give relief. This is often a necessary part of dealing with a flea allergy. Dogs are more resistant to the side-effects of steroids than humans, but significant side-effects can occur. For this reason, the goal is to administer the smallest amount of steroid needed to keep the dog comfortable. Some dogs develop a secondary bacterial infection in the skin. When this occurs, appropriate antibiotics must be used and steroid therapy reduced even further. INSTRUCTIONS:
(Those instructions which are specific for your dog have been checked:) We have dispensed oral prednisolone tablets. Give ____ of the ____ mg tablets daily for 7 days then ____ tablet(s) every other day for 4 more doses (8 more days). At the first time of itching, please contact us and we will advise further treatment. It is important that we see your dog again in approximately 14 days. Bear in mind that flea allergy often accompanies other types of allergy, especially inhalant allergy. If your dog itches when fleas have been eliminated, notify us of that so that we can modify the treatment approach. 2. Your dog has a bacterial skin infection secondary to its flea allergy. The following course of treatment has been formulated. Antibiotics are to be used for the next _____ days. Please let us see__________________in___________days. If the infection is not gone by the time the medication is completed, we may wish to change the medication. The medicated shampoo,_____________________, is to be used every _____ days. Massage into the hair coat for a few minutes thoroughly rinsing the dog. The topical medication,_____________________, is to be used ______ times daily for __________ days. Arthur Webster & Associates Pty Ltd P O Box 438, PYMBLE NSW 2073 Australia If you have any problems, please telephone us. Arthur Webster & Associates Pty Ltd P O Box 438, PYMBLE NSW 2073 Australia


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