All about dog allergies

Dogs, like humans, can also suffer from allergies. Most common dog allergies are itching of the skin. The respiratory tract can be affected causing coughing, sneezing, and/or wheezing. At times, the eyes and nose may develop a discharge. Also, the digestive system may be affected causing vomiting or diarrhea.

About 20 percent of the dogs in the United States suffers from some type of dog allergy. The most common dog allergies usually fall into one of the following; skin allergies, flea allergies, food allergies, inhalant allergies, contact allergies, or bacterial allergies.

Skin allergies
An allergic skin disease of dogs, known as canine atopic dermatitis, is caused by the dog's immune system hypersensitivity to common substances in the environment, such as dust mites or molds.

The signs of atopic dermatitis usually appear within the first two years of a dog's life.

If the dog begins to groom excessively, with licking or chewing of the paws, abdomen, and hind quarters, then it may suffer from atopic dermatitis. Also, check to see if the ears are reddened and hot to the touch.

Signs of dog allergies of this type are in the armpits, groin, or between the toes of the paws. Check to see if there is saliva staining. In light colored dogs, it appears as a red-brown staining. In chronic cases the skin, mostly in the abdomen, may change color from a pinkish, to angry red, to black mottling.

Other dog allergies like flea allergy, food allergy, and parasitic infestations may mimic the symptoms of atopic dermatitis making it difficult to diagnose. Once fleas, foods, and parasitic infestations are eliminated as being the offending culprits, then allergy skin testing for dust mites, pollens, and molds may be done to determine what causes the dog's atopic dermatitis.

Flea allergies
The most common form of dog allergies is flea allergy dermatitis. The flea itself is not the culprit in canine flea allergies. It is their saliva that causes the allergic reaction.

A skin allergy test can be preformed to determine if a dog is allergic to flea saliva. If it is, then a strict flea control regimen is required to reduce symptoms to dog allergies of this kind.. Caution must be used however to make sure the chemicals in the flea preparations are not harmful to the dog.

Inhalant allergies
Just like humans, canine inhalant dog allergies can be caused by pollens (tree, grass, and weed), dust mites, molds, and chemicals.

Although any pure bred or mutt can acquire inhalant allergies, the most common breeds that are affected by these dog allergies include Terriers, Poodles, Golden Retrievers, German Shepherds, Irish Setters, Dalmatians, Miniature Schnauzers, Pugs and Shih Tzus.

The symptoms of an inhalant allergy include scratching, biting, chewing at feet and constant licking. The itching may be most severe on feet, flanks, groin, and armpits.

Inhalant allergies are often the reason for recurrent ear infections in your dog.

Food allergies
Dogs can become allergic to a food they have eaten for years which causes many people to over look the possibility of a food allergy.

Food allergies only account for 10 percent of dog allergies. Common dog allergies to food include; chicken, beef, pork, milk, fish, eggs, corn, wheat, soy, artificial sugars and chemical preservatives.

Determining which food allergen can be time consuming. First, eliminate all the possible allergens from the diet, by using a home made diet consisting of a protein and a starch the dog has not eaten before. Gradually add back, one at a time for a week, the ingredients of the dog food. If symptoms return, then the offending food allergen should be easily determined. Commercial dog foods can be found that do not contain the offending allergen.

Food sensitivities in a dog may manifest as itchy skin, scratching at ears, shaking of the head, licking and biting at the hind quarters or feet, rubbing faces on carpeting, ear inflammations, coughing, and rarely vomiting, diarrhea, flatulence, sneezing, asthma like symptoms, behavioral changes, seizures, gagging, and vomiting.

Contact allergies
Contact allergy is the least common of all the types of dog allergies. Some of the common contact allergens include flea collars, wood bedding, grass, plants, and sometimes chemicals.

Bacterial allergies
Several species of Staphylococcus (Staph) bacteria live on normal dog skin. Normally Staph does not cause a problem with its host, but some 
dogs develop an allergy to it.

With this type of allergy the dog develops areas of hair loss that look much like ring worm. These areas become infected and need to be treated with antibiotics. The Staph allergic dog usually has recurrent Staph infections.

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