Allergies in Dogs

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005 300x225 Allergies in DogsFrom springtime through the late fall, many people are subject to seasonal allergies. But people are not the only ones suffering. For our dogs and cats, these same seasons can bring intense itching and discomfort. Yes, it seems our pets can get their own “hay fever”.

It’s a very frustrating and somewhat common situation. Pet owners by the millions flock to their veterinarians in the hope of relieving their pet’s itchiness. For many people, the constant chewing, licking, and scratching can test their love for their pets.

Current estimates show that about 20 million pets suffer from some sort of skin condition and many of these are allergies. Allergies are an over-reaction of the body’s immune system to a foreign substance, such as pollen or flea saliva. For people with allergies, we sneeze and sniffle as our bodies respond to histamine released by immune cells. These symptoms are due to the reaction of histamine with receptors in our nose and upper airways.

Our pets, however, react somewhat differently. Dogs and cats have many more histamine receptors in the skin and fewer in the nose. As histamine is released, the receptors cause an itchy feeling and the pet reacts by scratching at that site. Scratching can generate more histamine release, thereby causing more scratching. The constant assault on the skin by the pet’s claws can actually damage the skin, leading to bacterial infections. Areas of hair loss and oozing sores known as “hot spots” are very common with allergies.

Fleas are often found to be the reason for a pet’s itchiness. However, the pet who is truly allergic to fleas will often appear to have no fleas at all! Why? Because these pets are the ultimate flea catchers, doing everything in their power to bite or scratch the discomfort of the flea away. The flea’s saliva sets off an allergic reaction leading to a flurry of chewing and digging at the skin.

Allergies to airborne substances, such as pollen and mold spores, are another reason for itchiness in pets. This is known as atopy and affects many pets from springtime straight through until fall. This condition can be inherited in certain breeds.

If your pet has signs of allergies year round and you see little or no improvement with certain medications, you may have a pet that has food allergies. Contrary to popular belief, food allergies take time to develop and are not due to recent diet changes. Most pets who develop food allergies have been eating the offending food with little problem for years. Common food allergens can include any major protein or carbohydrate source in the pet’s food.

In some mild cases, the itchiness can be treated with anti-histamines or even steroids for a short period of time. However, pet owners need to be aware that allergies are not a condition that can be cured. The good news though, is that they can be well-managed with a team effort from the pet owner and the veterinary team.

Utilizing diagnostic tests such as blood testing and even skin allergy tests, veterinarians can often find ways to reduce the pet’s discomfort level. In some cases, your family veterinarian may refer you and your pet to a veterinary dermatologist. This specialist has many more diagnostic and treatment resources available to bring relief to your pet. In all cases, you, the pet owner, are a vital part of the team. It will be up to you to make sure that all pets in the household are treated for fleas or that your pet stays on the recommended hypo-allergenic diet and doesn’t sneak other treats!

Allergies are not only one of the most frequent reasons for a trip to the veterinarian, but are also a big reason for pet owners becoming frustrated with their pet. Working with your veterinary team to identify what is causing your pet’s symptoms will help keep your four-legged family member right where he needs to be…with you!

Bladder Disease in Dogs

Bladder%20Stones Bladder Disease in DogsDogs are much less prone to disease of the bladder and urethra as compared with cats. However, the lower urinary tract can be a site for inflammation, infection, stones, or obstructions. Signs that your dog may have lower urinary tract disease include difficulty urinating, urine that appears bloody or cloudy, foul-smelling urine, and frequent licking of the urinary opening.

Bacterial Cystitis
Cystitis means inflammation of the bladder. The most common cause in dogs is bacterial infection. Bacteria from the skin surface enter the urethral opening and migrate inwards, where they attach to the bladder lining.

Diagnosis of cystitis starts with a careful medical history and a physical exam. Urinalysis is used to detect bacteria and inflammatory cells. A urine culture further identifies the types of bacteria present and the antibiotics most effective to treat the infection.

Infections of the bladder are treated with antibiotics. Its very important to follow medication instructions and give the antibiotics for the full duration prescribed, even if your dog seems to feel better sooner. Incomplete treatment can result in relapses and the formation of resistant bacteria.

Urinary Stones
Urinary stones (uroliths) occur in approximately 1% of dogs. Uroliths are composed of crystallized minerals, such as struvite, oxalate, urate, cystine, or calcium phosphate. Certain breeds are more prone to urolithiasis, including Dalmatians, Dachshunds, Basset Hounds, English Bulldogs, Yorkshire Terriers, Irish Terriers, Lhasa Apsos, Miniature Poodles, Schnauzers, Shih Tzus and Chihuahuas. Stones can be found anywhere in the urinary tract. In the bladder they cause irritation, increasing the likelihood of cystitis or bacterial infections. In the urethra they can cause partial or complete obstruction. When this happens, urine flow is reduced. With complete obstruction, urine is trapped in the body. The kidneys are unable to continue cleansing the blood and death can result within a few days.

Dogs suffering from uroliths have signs similar to cystitis. If the stones interfere with urination the dog may also dribble urine, strain to urinate, vomit, stop eating, and have a painful abdomen. Diagnosis of urolithiasis is based on a physical exam and urinalysis. X-rays, ultrasound and blood tests may also be beneficial. For proper treatment, the veterinarian must identify the mineral content of the stones, either by finding crystals on the urinalysis or by collecting stones via urinary catheterization or surgery.

Some stones can be dissolved with special diets or flushed out of the bladder through a urinary catheter, but others require surgical removal. Following stone removal, dogs are treated to prevent recurrence. Stones typically form in concentrated urine at a pH specific to each type. Therefore, diet changes are aimed at increasing water intake, reducing mineral content of the urine, and producing urine with a pH incompatible with the type of stone involved.

Other Diseases
Other conditions that can cause urinary problems include tumors of the urinary tract and prostate ailments. Tumors of the bladder and urethra are uncommon in dogs. They can cause blood in the urine and urethral obstruction. Surgery and chemotherapy are beneficial, but the prognosis is uncertain because the tumors have a high rate of malignancy.

Prostate disease is quite common in older, un-neutered male dogs. Although the prostate is really part of the reproductive system, prostate disease can result in urinary symptoms. The prostate can become inflamed or infected, can grow abnormally large, or can become cancerous. All of these conditions increase the size of the prostate, leading to bloody urine, frequent urinary tract infections, difficulty defecating, and pain. Most types of prostatic disease are treatable.

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