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5.03.2005

The woes of an itchy dog left alone at home...


current mood: Itchy & Sad Itchy & Sad...


My allergies are back with a vengence... I am itchy like I have not been in a long while! So I thought today would be an appropriate day to research information on treating my syptoms so Richard & Karla can help me out!

This is the best info I have found so far:

Inhalant Allergies

Substances which can cause an allergic reaction in dogs are much the same as those which cause reactions in people including pollens, dust mites and molds. A clue to diagnosing these allergies is to look at the timing of the reaction. Does it happen year round? This may be mold or dust. If the reaction is seasonal, pollens may be the culprit.

Symptoms of inhalant allergies include: SCRATCHING, BITING, CHEWING AT FEET AND CONSTANT LICKING. The itching may be most severe on feet, flanks, groin and armpits. Dogs may rub their face on the carpet. Ear flaps may become red and hot. Chronic ear infections may follow. Skin becomes thickened, greasy and has a strong odor. Hot spots may develop due to irritation from constant chewing or scratching, which is then followed by infection. Allergies have also been implicated as a possible cause of Acral Lick Granulomas, a frustrating, treatment resistant condition whereby the dog creates a sore on his skin from constant licking.

DIAGNOSIS

If a dog has the above symptoms and responds well to the treatment measures outlined below, no further diagnostic tests may be needed. If the problem is severe and does not respond to simple measures, allergy skin testing can be done. A portion of the skin is shaved and a variety of substances are injected into the skin to see if they provoke a reaction. If so, an individual series of injections are formulated to give the dog over a period of time (there are blood tests designed to identify allergens without the skin testing, however their efficacy had not been proven. They should be reserved for cases where skin testing is not possible).

TREATMENT OPTIONS

Symptomatic Therapy
Treating the dogs symptoms may include; cool baths with or without colloidal oatmeal, Epsom salts, or medicated shampoos. This can be done frequently but provides only temporary relief. Caution should be used with sprays and ointments because many contain potentially harmful substances. According to Dr. Ackerman, Dermacool is a safe spray containing witch hazel. Cortispray is a low dose, nonsystemic cortisone spray which can be safely used for short periods of time.

Immunotherapy
Allergy shots are very safe and many people have great success with them, however, they are very slow to work. It may be six to twelve months before improvement is seen. I spoke with Dr. Christine Johnson, a veterinarian with the dermatology department of the University of Pennsylvania, about intradermal skin testing for inhalant allergies. She reports the average success rate is 70-75%. This rate is for dogs showing any improvement at all. At U of P. the cost for the procedure is $69.00 for the exam, $122.00 for the sedation and testing, and $85.00 for the first 5 months worth of vaccine. After that vaccines are purchased in 7 month supply for $65.00. Substances that are tested include cats(!), feathers, wool, molds, dust, trees, insects, plants and pollens. Before testing, your pet must be free from all steroids, oral or injected (including those found in ear and eye medicines) for a specified period of time in order for the test to be valid. In all about 60 different substances are tested for.

Corticosteroids
These compounds reduce itching by reducing inflammation. Unfortunately, they also affect every organ in the body. According to Dr. Ackerman, steroids should be considered only when the allergy season is short, the amount of drug required is small or as a last resort to relieve a dog in extreme discomfort. Side effects can include increased thirst and appetite, increased need to urinate and behavioral changes. Long term use can result in diabetes, decreased resistance to infection and increased susceptibility to seizures. You can recognize steroids by the suffix "-one", such as cortisone, dexamethasone, prednisone..etc.. In short, alternatives to steroid therapy should always be considered.

Antihistamines
Antihistamines can be used with relative safety in dogs. About one third of owners report success with them. The major drawback, as with people, is sedation. Dr. Ackerman recommends that a minimum of three different types of antihistamines be tried before owners give up on this therapy. According to Dr. Johnson, the most common problem with this type of treatment is that owners give the drugs at doses that are too low. Check with your vet on correct dosing. Examples of antihistamines commonly used for dogs include: Tavist, Benadryl, Chlortrimeton, Atarax and Seldane. Personally, I have seen the best results with Atarax.

Omega-3 and Omega-6 Fatty Acids
These fatty acids are natural anti-inflammatory agents. They reportedly are helpful in 20% of allergic dogs. My own experience puts this figure a little higher. They are certainly worth a try because they are not harmful and have virtually no side effects. Omega-3 fatty acids are found in fish oils (especially krill and cod) and omega-6 fatty acids are derived from plants containing gamma-linolenic acid (GLA), such as oil from the evening primrose. These supplements are different from those sold to produce a glossy coat. They tend to reduce inflammation that may lead to skin sores but are not as effective in reducing itching. Products that contain both omega-3 and omega-6 fatty acids include: Omega Pet, Derm Caps, and EFA-Z Plus.

Environmental Control
If you know which substances your dog is allergic to avoidance is the best method of control. Even if you are desensitizing the dog with allergy shots, it is best to avoid the allergen altogether. Molds can be reduced by using a dehumidifier or placing activated charcoal on top of the exposed dirt in your house plants. Dusts and pollens are best controlled by using an air cleaner with a HEPA filter. Air conditioning can also reduce circulating amounts of airborne allergens because windows are then kept closed.

Prevention
While there is nothing you can do to prevent a rescue dog from developing allergies, breeders should be aware that allergic dogs SHOULD NOT BE BRED!!! Dr. Johnson confirmed that there is clinical proof that allergies are inherited!

reference: rec.pets.dogs: Canine Allergies FAQ

So, I am recommending for myself that Richard go and buy some Atarax and we give it a go. I think Benadryl may not be strong enough for me, and the Tavist was not very effective either, but that may have been from the low dosage they were giving me. Also, the fatty acid pills can probably help more if I go for some of the others types (I am already taking Derma Caps daily). The immunotherapy is just going to take time, so we will keep it up. Richard has gotten very good at giving me my shots and I don't mind it so much when Karla hold me down cause I love the way she distracts me and it makes me feel really loved.

I hope this information is helpful to anyone other doggies having allergy issues. Or to their owners, so they will know how to treat their doggies well.

1 comment:

Anonymous said...

Wow, my dog has those exact symptoms. I will try that Atarax, oatmeal and epsom salts. I have tried the shots, benedryl, and baths. I even went so far as to buy booties for her feet and a cone for her head to switch out between. Poor baby, it just keeps getting worse and her feet look almost bloody with how red they are.