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Allergies


What is allergy?

Allergy is a hypersensitivity disorder in which the body’s immune system overreacts to normally harmless environmental substances known as allergens. People with allergies usually have symptoms typical of Hay Fever or asthma. Comparatively, small animals usually show signs of allergies on their skin and/or ears. Horses may display signs similar to both people and small animals.


Can animals get allergies? If so, how will I know?

Yes, animals can have allergies just like humans with either seasonal or year-round signs. However, animals typically display signs of allergies on their skin and/or ears. For instance, people with allergies tend to sneeze and wheeze due to allergic rhinitis, sinusitis, and asthma whereas allergic animals tend to itch and scratch due to allergic inflammatory skin and ear disease. In addition to itch, horses may have recurring hives and “heeves/heaves”. As the skin/ears become inflamed, secondary infections (bacteria and yeast) develop leading to an even more heightened state of itch experienced by the pet. Dander (seborrhea), odor, red bumps (papules), pimples (pustules), blackheads (comedones), scabs (crusts), red skin (erythema), skin thickening (lichenification), and hair loss (alopecia) are signs suggestive of allergies complicated by secondary infections.

Hives in the form of 'rings' in an allergic horse.

Hives in the form of ‘rings’ in an allergic horse.


What are some things animals tend to be allergic to?

  • Fleas (#1 allergy)
  • Food
  • Pollen (e.g., tree, grass, weed)
  • Molds
  • Mites (e.g., house dust and storage mites)
  • Insects (a common culprit in horses)
  • Dander

How do I know if my pet is itching too much?

Licking, chewing, biting, rubbing, and scratching are all signs of pruritus (itch). Many times animals are itchier during the night when they are not preoccupied with other events. The face, ears, paws, armpits, groin, and rump tend to be the itchiest areas in allergic small animals. Nevertheless, it can be difficult to determine if a cat is itchy or just grooming. If a cat vomits hairballs, has excessive hair in the stool, has areas of hair loss, or has obvious skin lesions, the cat is likely to be itchy. Horses may bite, rub themselves (against stalls, fences, etc.), flick their tail, stomp their feet, and shake their head. The face, ears, mane, underside of the trunk, limbs, and tail base are many times the itchiest areas. Every pet has its own itch tolerance which means the intensity and reason(s) for your pet’s pruritus may not be the same as a friend’s pet.

Itchy allergic skin disease in a cat

Itchy allergic skin disease in a cat.


What are “secondary infections?”

Animals with underlying allergies often get secondary problems in the form of infections. Bacteria and yeast (fungus) already normally present on the skin (and in the ear) overgrow and cause infection when the skin (ear) is not properly functioning as is the case with allergies (and a multitude of other underlying skin disorders). Skin inflammation due to allergies favors these infections thereby complicating the clinical picture of the pet. Often these infections add to the overall itch sensation and are responsible for many of the skin changes– dander (seborrhea), odor, red bumps (papules), pimples (pustules), blackheads (comedones), scabs (crusts), red skin (erythema), skin thickening (lichenification), and hair loss (alopecia). Controlling these infections with topical and/or oral antibacterial and antifungal medication along with managing the underlying allergy will help alleviate itch and secondary skin changes. Even the best managed allergic animal will occasionally flare with an infection. Therefore, owners/guardians should routinely look for signs of infection on their allergic pet as infections just add to the animal’s misery.

Bacterial skin infection
Yeast skin infection

LEFT: Bacterial skin infection.

RIGHT: Yeast skin infection.


If my pet only seems itchy during a specific time of year, should I be concerned?

It depends. Mild itch that is accepted as tolerable by an owner/guardian may need no therapy other than timely baths. Itch that is more intense or becomes more intense each year warrants a discussion with your primary care veterinarian. Therapy in this circumstance may include flea prevention (fly spray or spot-on for horses), medicated shampoo, antibiotics, anti-yeast medication, antihistamines, a fatty acid supplementation, and/or a short course of oral or topical steroids. If this approach does not help alleviate signs, the pet does not tolerate it, or if the itchy season is lengthening then consultation with a dermatologist is an option. Regardless who examines your pet, it is important to start managing these pets sooner rather than later.


How soon can I expect for my pet’s allergic skin disease to get better?

With dermatology there is no such thing as a “quick fix” because it takes time to understand the underlying cause of your pet’s condition. Often the skin condition has been present for many years prior to referral necessitating an ample period of time to improve and manage skin signs. First, we will need to eliminate the “absolutes” which are infections (bacteria and yeast) and flea/insect bites. Since therapy for allergies is tailored to the individual, other diagnostic tests and therapies are on a case by case basis. It is important to remember that allergies are managed, not necessarily cured!


What is skin testing?

Intradermal testing (IDT) or allergy skin testing is a tool that aids the dermatologist in the selection of environmental allergens (pollen, mold, mites, insects, dander) for subsequent immunotherapy (allergen-specific allergy shots or oral allergy drops). This test followed by tailor-made allergy shots or oral drops is best performed after other possibilities for the itchy skin disease have been excluded. Veterinary IDT is similar to human allergy skin testing; however, our patients need sedation and clipping most of the time. The side of the chest (neck for horses) is shaved in the shape of a rectangle and small black Sharpie pen dots are made in a linear array on the shaved skin allowing the dermatologist to know where to make each injection. A panel of allergens (pollen, mold, mites, insects, dander) is then injected in the skin. The size of any developing wheals is recorded. The entire procedure lasts approximately 30 minutes in small animals, while in horses test reading takes a full 24 hours (overnight stay). Importantly, this test is used for environmental allergies (atopic dermatitis), not food-related allergies.


Is there a benefit to allergy skin testing?

Yes. Intradermal testing allows us to select allergens (pollen, mold, mites, insects, dander) to which the pet is allergic to for immunotherapy (allergy shots or oral allergy drops) administration. These injections or oral drops are the best long-term management strategy for most pets with environmental allergies since they are directed toward improving the underlying cause of signs. Specifically, this form of therapy is designed to de-sensitize your pet’s skin to common every day allergens. However, immunotherapy does not exclude the continued use of topical therapies and routine monthly flea prevention in allergic pets. In general, pets experiencing clinical signs (itchy skin/ears and recurring infections) for at least 5-6 months out of the year benefit the most from this form of testing.


What medications need to be discontinued prior to skin testing?

There are several medications prescribed for itchy skin that will inhibit (wheals) on allergy skin testing. Please keep in mind this is a rough guideline; individual cases may vary. Review the drug withdrawal schedule below and discuss it with your primary care veterinarian. Drugs are to be withdrawn under the advice and discretion of your primary care veterinarian.

DRUGWITHDRAWAL TIME
Topical steroids (ears, skin, or eyes)15-30 days (2-4 weeks)
Oral steroids30-60 days (4-8 weeks)
Injectable steroids70-84 days (10-12 weeks)
Topical or oral antihistamines10-14 days (2 weeks)
Fatty acid supplementation (if possible)14-21 days (2-3 weeks)
Tranquilizers2-3 days (0.5 weeks)
CyclosporineCase by case basis

What medications can I continue to give my pet prior to skin testing?

Antibiotics, antifungals, flea prevention (fly spray for horses), heartworm prevention, insulin, thyroid supplementation, heart medication, anti-seizure medication, and ophthalmic cyclosporine/tacrolimus for dry eye can be continued prior to any appointment or skin testing procedure. Cool water baths with oatmeal can be used to help soothe the skin and relieve itch up to 3 days before skin testing. Ears may be flushed with a veterinarian-recommended flushing agent. Please discuss what medications you should continue administering prior to the appointment with your primary care veterinarian in the event your pet has not yet been examined by the dermatologist.


When is the best time to skin test?

Skin testing can usually be performed throughout the year; however, pets with seasonal allergies are best tested near the end of their “allergy season” (30-60 days from peak season). Intradermal testing at other times of the year for seasonally allergic pets may require repeat testing. Consequently, many pets will not be skin tested during the initial appointment as the seasonal history needs to be ascertained and complicating infections need to be eliminated.


What is blood (serum) allergy testing?

Blood allergy testing is usually reserved for cases in which skin testing cannot be performed. This scenario occurs when an animal cannot be sedated due to another medical condition or when appropriate drug withdrawal (e.g., steroids) cannot be accomplished. Most dermatologists would agree that intradermal testing (IDT) gives a better reflection of what the skin is reacting to compare to blood allergy testing. Since feline skin does not visibly react as well as other species during (IDT), blood allergy testing may be recommended for allergic cats. Sometimes both tests are used to get a better overall assessment of which environmental allergens are bothersome to the pet. Interpretation of blood allergy tests is improved once other causes of itchy skin disease have been excluded (especially year-round itchy pets). Importantly, this test is used for environmental allergies (atopic dermatitis), not food-related allergies.


How long does it take to see improvement with allergy injections or oral allergy drops?

Most pets will respond to immunotherapy (allergy shots or oral allergy drops) within 6-9 months, but some will require up to a year before total benefits are appreciated. Roughly 50-80% of animals with environmental allergies (atopic dermatitis) respond to this form of therapy, but response does vary. During the initial phase of immunotherapy (“induction”) most pets will require symptomatic treatments (e.g., medicated baths, antihistamines, steroids, cyclosporine) to make them more comfortable. Over time the hope is to reduce the frequency or need of some of these other medications. Please remember allergies are managed and rarely ever cured. Our goal is to reduce 80-90% of the itch/clinical signs, 80-90% of the time.


How do I know if my pet has food allergies?

Animals presenting with itchy allergic skin disease can look very similar if not identical regardless of the “trigger” (pollen, mold, mites, insects, dander, food). This why the animal’s history of itchy skin disease is important as it can provide clues to potential triggers. Animals reacting to foodstuffs tend to have year-round itch assuming they are eating roughly the same diet all year long. Horses with food allergies may have recurring hives as well. In this instance, a veterinarian may recommend an exclusive novel diet (to which the animal has never been exposed) for a period of time in order to determine if food is a component of the signs. If clinical signs improve with the change in diet, then the pet is challenged with the previously fed diet to determine if itch returns. Recurrence of itch after diet challenge confirms the diagnosis of food allergy (cutaneous adverse food reaction). Currently skin testing or blood (serum) allergy testing is not recommended to support a diagnosis of food allergies since these tests have many false results.


Can I just treat my pet with steroids?

Steroids (e.g., prednisone) definitely have their place in the treatment of allergic skin disease, and are often used to alleviate itch. However, long-term use of steroids can cause detrimental health problems. For this reason, it is recommended the underlying trigger of allergic signs be sought and managed with other less harmful treatments for those animals with chronic problems.

Best Pets for People with Allergies

The Asthma and Allergy Foundation of America estimates that one in five Americans suffers from all types of allergies, and of these between 15 and 30 percent have allergic reactions to cats and dogs. With so many people affected by allergies, it has become a growing trend to market pets as hypo-allergenic or suitable for people with allergies.

Mother with her baby playing with pet

Dr. Mark Stickney, Director of General Surgery Services at the Texas A&M University College of Veterinary Medicine & Biomedical Sciences, discusses the causes of these allergies and how to keep them at bay while enjoying the companionship of a cherished pet.

“While there are dogs and cats that are marketed as hypoallergenic, there is really no such thing,” notes Stickney. “People can be allergic to anything and it varies by person.”

The most common causes of pet allergies from dogs are flaking skin, called dander, and seasonal allergies can be caused by pollen spores that have attached to a dogs fur and brought into a house.

The kinds of dogs that are probably less likely to cause allergies are those with short hair and those that are less-likely to shed. These include terriers such as Yorkies and Westies, Poodles, and Schnauzers.

“There are really no breeds of cats that are better for people with cat allergies because these allergies are usually caused by the cat’s saliva,” states Stickney. “When a cat grooms itself, the saliva dries on its fur and is then transferred to the pet owner.”

There are some breeds of pets, such as the Chinese Crested dog and Sphinx cat, that are mostly or completely hairless. These pets may be less likely to cause allergies as the fur will not hold onto allergens.

“While hairless pets may be an option for people with allergies, these types of animals come with their own problems,” warns Stickney. “Hairless dogs have to be washed very often as they tend to have very oily skin and other skin problems.”

There also alternative pet options for people with allergies if they are willing to be a little adventurous. Reptiles, birds, rats, guinea pigs and fish are among the possibilities.

“It may take some experimentation to find the right pet as different people are allergic to different kinds of animals, but reptiles and fish should be safe for just about anybody,” says Stickney.

However, if one has their heart set on owning a dog or cat there are a few steps that they can take to alleviate some of the allergy risks.

“Bathing your pet once a week and vacuuming your house often are two precautions you can take to cut down on the allergens attached to your pets and floating around your house,” notes Stickney. “If possible, grooming should be left to someone who is not allergic as to minimize your contact with the pet’s fur and dander.”

Owning a pet is a fulfilling experience and something that many of us could not bear to live without. While allergies may dictate the breed or type of animal one can live with, everyone should be able to find a pet that they can love and that doesn’t make them sneeze.

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the Web at vetmed.tamu.edu/news/pet-talk. Suggestions for future topics may be directed to editor@cvm.tamu.edu.

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The Dawn of Spring Allergies

As the trees start to pollinate, the spring season starts to dawn and so do those pesky allergies. A time to put the winter cold past us and a look to the brighter days are not so bright for those with allergies. Many pets are affected by spring allergies and it is important to be aware if your pet shows signs so you can lighten its discomfort and help provide brighter days.

A siamese cat with blue eyes peers at the camera while crouching in the grass

According to Dr. Adam Patterson, clinical assistant professor and a board certified dermatologist at the Texas A&M College of Veterinary Medicine & Biomedical Sciences (CVM), an allergy is an exaggerated response in which the body’s immune system overreacts to normally harmless environmental substances known as allergens.

Patterson explains that pets can show signs of allergies during only the spring or year-round dependent on what they are allergic to.

“Any cat and horse breed can be affected by allergies,” notes Patterson. “Any dog breed can also be affected, but there are certain breeds that are more susceptible to allergies, including: terriers, retrievers, Dalmatians, Shar Peis, and bulldogs.”

When people encounter allergic reactions, they tend to sneeze and wheeze. Whereas, animals tend to itch and scratch their way to a hopeful recovery, but this can actually promote more severe skin problems.

“An itch may be manifested as licking, chewing, biting, rubbing, scratching, head shaking, and/or scooting,” explains Patterson. “Common itchy body areas include the face, ears, paws, armpits, groin, rump, and anal region. Horses may present with an itchy skin disease and/or hives. Every pet has its own itch tolerance which means the intensity and reason(s) for your pet’s itch may not be the same as another animal. Regardless of the animal, allergic patients are prone to secondary infections that can cause skin discoloration, hair loss, pimples, or scabs.”

If your pet does show any of these allergic signs, it is in everyone’s best interest to contact your veterinarian. Your veterinarian can develop a customized treatment plan for your pet so the itch can be alleviated. However, Patterson comments that allergies can be managed, not necessarily cured.

“Treatments are tailored to the individual based on the extent, severity, and seasonality of signs,” says Patterson. “The ‘absolutes’ of therapy include: routine bathing to remove pollen accumulation, infection control (topical and/or systemic), and flea prevention. Other treatments can be prescribed based on what the patient is sensitive to, and the response to the ‘absolutes.’ It is important to recognize that allergies can be managed, but often are not cured.”

Sometimes steroids are used to alleviate an itch. However, Patterson warns that long-term use of steroids can cause detrimental health problems. “For this reason, it is recommended that the underlying trigger of allergic signs be sought and managed with other less harmful treatments for those animals with chronic problems,” explains Patterson.

The most common allergens that affect pets are fleas, food, pollen, molds, mites, insects, and dander. As there are a lot of factors to consider when diagnosing what your pets are allergic to, your veterinarian can perform tests and personal evaluations based on many factors to help determine the culprits.

“Elimination diet trials are used to exclude food allergies,” notes Patterson. “Skin or blood ‘allergy’ testing is used to select candidate pollens for immunotherapy (oral allergy drops or allergy injections) in animals with an environmental allergy. It is important to recognize that these tests DO NOT DIAGNOSE an environmental allergy as ‘normal’ animals can have ‘positive’ test results. The diagnosis is based on the history, clinical signs, and the process of exclusion.”

Spring allergies are more common in pets than most people believe. Ten percent of the canine population is affected by allergies. It is important to be aware of the allergic signs and notify a veterinarian when the symptoms persist. If you have any questions pertaining to allergies or skin ailments you can call the dermatology department at the CVM Small Animal Clinical Sciences at 979-845-2351 or visit their webpage to review frequently asked questions and answers.

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the Web at vetmed.tamu.edu/news/pet-talk. Suggestions for future topics may be directed to editor@cvm.tamu.edu.

Allergies in Pets

Dog Scratching Flea

Many of us look forward to the warm spring weather after enduring the harsh winter months. The spring season brings peaceful fields of blooming flowers and a warm, inviting sun. Unfortunately, spring is also a time when many people suffer from allergies that can make daily life almost intolerable. Just like people, pets can suffer from pesky allergies too. It is important to know the signs of allergies in animals so you can alleviate any irritating sensations your pet may be experiencing.

Dr. Adam Patterson, clinical assistant professor and chief of dermatology at the Texas A&M College of Veterinary Medicine & Biomedical Sciences (CVM), defines an allergic reaction as the body overreacting to substances (like pollen) in the environment that are normally harmless. This hypersensitivity to the environment can exist seasonally or year-round in both people and animals.

While humans suffer through allergy season coughing and sneezing into a handful of tissues, pets deal with allergies differently. An animal’s common reaction to an allergy is observed as itch in specific body areas, which can result in skin irritations and infections.

“An itch may be manifested as licking, chewing, biting, rubbing, scratching, head shaking, and/or scooting,” Patterson said. “Common itchy body areas include the face, ears, paws, armpits, groin, rump, and anal region. Horses may present with an itchy skin disease and/or hives.”

Patterson further explains that every animal has a different reaction to allergies, just like people do.

“Every pet has its own itch tolerance, which means the intensity and reason(s) for your pet’s itch may not be the same as another animal,” he said. “Regardless of the animal, allergic patients are prone to bacterial and yeast infections that can cause skin discoloration, hair loss, pimples, scabs, and/or ear disease.”

According to Patterson, cats and horses can be affected by allergic skin disease. He says that any dog breed can be affected as well, but certain breeds—including terriers, retrievers, Dalmatians, Shar Peis, and bulldogs—are more susceptible.

If your pet shows any sign of an allergy, it is best to contact your veterinarian so they can properly diagnose the cause of itch, which may include allergy.. Your veterinarian can also perform tests to determine the most effective treatment plan to alleviate your pet’s discomfort. Allergens that most commonly irritate pets include fleas, food, pollen, molds, mites, insects, and dander.

“Treatments are tailored to the individual based on the extent, severity, and seasonality of signs,” Patterson said. “The ‘absolutes’ of therapy include routine bathing to remove pollen accumulation, infection control (topical and/or systemic anti-infectives), and flea prevention.”

Patterson also emphasizes to pet owners that allergies can be managed, but rarely cured. For pets that suffer from chronic allergies, treatments may include changes in diet, symptomatic medical therapy, and or allergy vaccines specific to the animal’s environmental sensitivity. Patterson reminds pet owners that indiscriminate use of long-term steroids can cause serious health issues.

However, if a pet’s allergies are left untreated, there can be other harmful effects. Dr. Alison Diesel, clinical assistant professor at the CVM, explains how your pet may suffer detrimental health problems without treatment.

“Allergies if left untreated/unmanaged can cause continued discomfort in your pet,” Diesel said. “Self-trauma to the skin can create wounds that can become secondarily infected. We occasionally see pets that have spent so much time itching and scratching that they are not sleeping well and may even lose weight…In more severe cases, a visit to a veterinary dermatologist may be quite helpful.”

Although many people suffer from allergies, many of us do not recognize that allergies are just as common in animals. If you think your pet may be afflicted with allergic skin disease, your veterinarian can begin the process of helping your pet enjoy both the indoors and outdoors again.

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the Web at vetmed.tamu.edu/pet-talk. Suggestions for future topics may be directed to editor@cvm.tamu.edu.

Animals and Allergies

cat having allergy

With the emergence of springtime, comes the arrival of allergies. Although the landscape is lush, many people experience the beauty that comes with the warmer weather as well as the bothersome allergy symptoms. Pets can also be affected by allergies and it is important to be mindful of any symptoms that your pet might be displaying.

“People sneeze and wheeze with allergies, while dogs tend to itch and scratch,” says Dr. Adam Patterson, clinical assistant professor and a board certified dermatologist at the Texas A&M College of Veterinary Medicine & Biomedical Sciences. “The hallmark sign of allergic skin disease is itch that can be manifested as licking, chewing, rubbing, biting, scooting, head shaking, and/or scratching. Typically, the face, ears, paws, armpits, groin, and rump are the most affected sites.”

Patterson explains that animals with allergic skin disease are highly prone to recurring skin and/or ear infections involving bacteria and yeast. Infections can cause increased itch, redness, pimples, blackheads, scabs, dander, hair loss, skin thickening, and odor. Horses many times will break out in hives.

“Animals tend to be allergic to many of the same things people are hypersensitive to such as pollen, mold, dust, house dust mite, and foodstuffs,” Patterson explains. “An exception would be fleas – the most common thing dogs and cats are allergic to. Despite this, many people are in ‘fleanial’ and refuse to believe just a few flea bites can be triggering the itch response in their pet.” Likewise, horse owners may not be aware how just a few insect bites could be responsible for or contributing to itchy skin disease.

Allergic skin disease can be mistaken for many other forms of skin disease. A veterinary dermatologist is trained to work with primary care veterinarians to get down to the bottom of how to best diagnose and manage skin and ear disease, including allergies, in animals. See www.acvd.org for more information.

It is important to understand that allergies can be managed, but not cured, just as with humans. The goal is to reduce the extent and severity of signs, not completely eliminate them.

“Management regimens might include increased frequency of bathing (washing pollens of the skin surface), antimicrobials or antibiotics, flea prevention, fatty acids, antihistamines, change in diet, steroids, and immunotherapy, also known as desensitization or hyposensitization. The use of the latter can be determined through a good step-wise diagnostic approach along with allergy skin testing and administered by way of allergy shots or oral allergy drops,” says Patterson.

When it is time to take your pet in for allergy skin testing?

“Typically, dogs should have allergy symptoms for at least 5-6 months out of the year before considering skin testing for environmental allergies, which include reactivity to pollen, molds, house dust mite, and house dust, in order for the diagnostic tests and treatment to be cost effective over the long haul,” Patterson recommends.

Patterson explains that rainfall cuts down on airborne pollen and may provide itch relief to pets, but at the same time rain may cause plants to produce more pollen over the next few weeks. Indeed, rain fall might worsen flea and mold allergies because moisture and humidity are favorable to fleas and mold. Of course, rain has no effect on food-related allergic skin diseases.

“Given the mild winter and lack of national weather fronts during the 2011-2012 seasons, pollen is likely to be at an all-time high this year. Consequently, there likely will be many itchy pets this year,” says Patterson.

Allergies are certainly not an uncommon thing to see in pets. It is important to be aware of the symptoms and to notify a veterinarian when they persist. For more information please visit https://vethospital.tamu.edu/large-animal/dermatology/allergies/

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the Web at vetmed.tamu.edu/news/pet-talk. Suggestions for future topics may be directed to editor@cvm.tamu.edu.

*Photo- The cat was scratching because of allergies

Pets can have allergies too

cat with dim eyes

With spring right around the corner, many of us are bracing ourselves for pesky allergies. Just like people, pets can suffer from allergies, too. While humans tear, cough, and sneeze their way through allergy season, pets usually deal with allergies differently.

Dr. Adam Patterson, a clinical associate professor and chief of dermatology at the Texas A&M College of Veterinary Medicine & Biomedical Sciences, said every animal has a different reaction to allergies, just as people respond to allergies differently. However, most animals display itch as a hallmark sign of allergic skin disease.

“An itch may be manifested as licking, chewing, biting, rubbing, scratching, head shaking, and/or scooting,” Patterson said. “Common itchy body areas include the face, ears, paws, armpits, groin, rump, and anal region. Horses may present with an itchy skin disease and/or hives.”

Allergens that most commonly irritate pets include fleas, pollen, molds, mites, insects, danders, and food.

“Every pet has its own itch tolerance, which means the intensity and reason(s) for your pet’s itch may not be the same as another animal,” Patterson said. “Regardless of the animal, allergic patients are prone to bacterial and yeast infections that can cause skin discoloration, hair loss, pimples, scabs, and/or ear disease.”

If your pet shows any sign of an allergy, it is best to contact your veterinarian so they can properly diagnose the cause of itch. Your veterinarian can also perform tests to determine the most effective treatment plan to alleviate your pet’s discomfort.

We all know how annoying allergies can be, so be sure to keep an eye on your pet this allergy season. If your pet shows any sign of an allergic skin disease, visit your veterinarian to help alleviate your pet’s discomfort.

Pet Talk is a service of the Texas A&M College of Veterinary Medicine & Biomedical Sciences. Stories can be viewed on the Web at vetmed.tamu.edu/pettalk . Suggestions for future topics may be directed to editor@cvm.tamu.edu .

Texas A&M Veterinary Specialists Help Pug Overcome Multiple Health Conditions

A pug named Chispa with its tongue sticking out, after overcoming multiple health conditions.
Chispa. Photos by Jason Nitsch ’14, VMBS Marketing & Communications

Unlike her high-energy, attention-seeking siblings Canela and Choclo, Chispa the pug is lovingly described by her owner Peter Schulte as more of a “potato kind of dog.”

“She just lies around,” said Schulte, who lives in downtown Houston with his partner Ramiro Flores and their three pugs. “She likes lying outside in the sun or, really, on any flat surface. Once a day, she’ll get a little playful streak and then she’s back to just lounging.” 

Chispa’s only other spurt of energy is when she springs into action as the garbage truck comes down her street. But when her legs started giving out mid-chase, her owners knew that something was wrong.

So, Schulte and Flores spoke to their local veterinarian, beginning a long journey that would lead to two specialty services at the Texas A&M College of Veterinary Medicine and Biomedical Sciences’ (VMBS) Small Animal Teaching Hospital (SATH). 

In the end, Chispa’s veterinary team used an individualized treatment plan and collaborative approach to restore the pug’s quality of life — and her ability to chase the garbage truck as much as her heart desires.

A Sudden Change

Chispa’s owners initially noticed that she was struggling to control her back legs in 2023.

“She was totally fine otherwise, and she was still happy,” Schulte said. “She would try to chase the garbage truck, but her legs would just give up.”

Chispa’s local veterinarian conducted testing but was unable to determine the problem, so they referred the pug to the SATH’s Neurology Service.

“Her veterinarians at A&M quickly allayed our fears that the problem was not as scary or bad as we thought it was,” Schulte said. “There was just a bit of a compression on her spinal cord by a certain vertebra that was causing her to lose control of her back legs every once in a while.”

Chispa’s veterinary team, led by VMBS professor Dr. Nicholas Jeffery and then-resident veterinarian Dr. Emily Dupont, performed surgery to stabilize her vertebrae to reduce their movement and compression of the spinal cord. 

“There was maybe a month or two during recovery when it was tough for her to walk, but she was more than happy to just lie down and stick it out,” Schulte said. 

Discovering A Secondary Problem

Veterinarians pose with a pug named Chispa standing on an examination table, after the pug overcame multiple health conditions.
Clinical assistant professor Dr. Christina Gentry, 4VM student Rayanna (Hack) Aguilar, Chispa, and veterinary resident Dr. Veronica Izydorczyk.

During the process of diagnosing and treating Chispa’s spine issue, her veterinarians noticed another potential problem while examining her full-body MRI scan — fluid had built up inside one of her middle ear cavities, in the space behind the ear drum.

Chispa was then referred to the SATH’s Dermatology Service, where Schulte and Flores shared that the pug also had a history of intermittent itching, skin sores and ear and skin infections. Her dermatology team, including clinical assistant professor Dr. Christina Gentry, began developing a treatment plan to narrow down the potential causes of Chispa’s symptoms and find ways to alleviate her discomfort.

“Our goal in the Dermatology Service is always to not only to address the patient’s infection right now but to give owners a strategy to prevent secondary infections by figuring out why this specific pet has infections in the first place,” Gentry said.

An additional benefit of addressing Chispa’s infections was reducing the chance that an infection could spread to the new implants stabilizing her spine. 

“Because Chispa is predisposed to getting skin and ear infections, the concern is that eventually, those bacteria could grow to a high enough number that they could travel through the lymphatic vessels or bloodstream and set up shop in her implants,” Gentry said. “Plus, it’s just not fun being itchy and having recurrent infections.”

Narrowing Down The Cause

When a dog has consistent itching and infections, the most common causes are parasites and allergies. Because Chispa was on parasite prevention, her dermatology team concluded that her symptoms were caused by allergies.

A common problem for dogs in Texas, allergies often occur due to dust mites, pollen and outdoor molds. In addition, some dogs can have allergies to specific proteins commonly included in dog food. Determining the exact allergens affecting a specific dog can be a long and complicated process, but Gentry was dedicated to helping Chispa find relief, no matter how long it took.

“The first thing we usually do is a diet trial using a prescription food that doesn’t have the proteins in it that commonly cause allergies in dogs,” Gentry said. “We feed that diet exclusively for somewhere between six and 12 weeks while we address the infections. If you do that and they’re still getting new infections, then you know the food isn’t the problem.”

While completing the diet trial, Chispa’s skin infections were treated with topical antiseptic medications and shampoos. At the end of the trial, her allergy symptoms were better, but not resolved, leading her veterinarians to conclude that she was allergic to both a protein in her food and environmental allergens.

As a result, Chispa was put on a new routine of medicated baths, medications for environmental allergies, and special food that slowly improved her allergy symptoms. She will most likely continue to have flare-ups occasionally, but the Texas A&M dermatology team is there to help adjust her treatments or provide care whenever she needs it.  

“Sometimes, something changes in the food or the environment and you see these ups and downs, but our goal as dermatologists is to catch these problems when they’re early and then make adjustments to the pet’s therapy,” Gentry said. “I suspect that Chispa will still need chronic care to keep her skin and ears normal. But her owners and I love this dog and are happy that she’s generally moving in the right direction.”

An Unfortunate Predisposition

A veterinarian examines Chispa the pug with a stethoscope after the pug overcame multiple health conditions.
Aguilar examines Chispa.

Although Chispa’s ear infections were largely because of her allergies, she was also predisposed because of her breed. Brachycephalic, or short-skulled, breeds like pugs have narrow ear canals that taper at the bottom, making it easier for bacteria to become trapped inside and break through the ear drum to the middle ear cavity.

“Brachycephalic breeds can also often have a syndrome called middle ear effusion (MEE),” Gentry said. “When their Eustachian tube gets closed, either from a respiratory infection or from just anatomical differences that we see in these smush-faced dogs, the normal, small amounts of fluid that your middle ear makes can’t exit; they just build up over time.”

This fluid build-up can press on nerves that control an individual’s ability to move their pupils, blink, hold their head straight and feel their face, resulting in a constant feeling of dizziness and nausea.

While Chispa was lucky that her suspected infection could be resolved through medication, many brachycephalic dogs that develop MEE with clinical signs or a serious middle or inner ear infection end up needing ear canal surgery at some point in their lives. Surgery can have additional risks in these breeds because they are more likely to develop anesthesia complications from their reduced airway. 

“If you have a pug, French bulldog, English bulldog, Boston terrier, or any other smush-faced dog, any sign of an ear infection should prompt you to seek a veterinarian as soon as possible,” Gentry said. “In these breeds, their middle ear is very close to their inner ear and brain, and we don’t want any infection to spread.”

Fortunately for Chispa, her owners and veterinary team are dedicated to managing her skin and ear infections and keeping the pug as comfortable as possible. Thanks to her new restricted diet, Chispa had the added benefit of losing a few pounds, improving her recovery from her spine surgery. 

“When we came to Texas A&M, we were confident that we could get everything resolved in one spot without having to go to different specialists and different places,” Schulte said. “Chispa had a cast of people looking after her and everybody seemed to really like her. Now, she’s doing great. If she wants to chase the garbage truck, she’ll take off like a stallion, with no issues whatsoever.”

Love Is In The Air And So Are Allergies

A Corgi sitting in a field of spring flowers

Sprinting through grassy meadows, rolling around on flower-filled hills, and playing in the breezy spring air may seem like a dream for your pet, especially following the chill of winter. But the incoming season brings with it much more than the beauty that the winter season stripped away; it also opens a season of allergies — and itching — that can have your pets preferring the great indoors.

Dr. Christina Gentry, a clinical assistant professor at the Texas A&M University College of Veterinary Medicine & Biomedical Sciences, prepares owners for the symptoms and necessary remedies of seasonal allergies that are on the horizon.

Look What The Wind Blew In

When the warming weather begins luring owners and their pets outside for walks, it’s important to remember that spring outings expose pets to an influx of allergens that can affect their furry friends’ health.

“In general, at least 10% of the canine population are known to suffer from allergy season,” Gentry said. “This time frame usually coincides with the spring season, as the trees start releasing pollen around Valentine’s Day each year.”

Some of the environmental allergens your pet may encounter in the wild include tree, grass, and weed pollens as well as outdoor molds. While many people associate environmental allergens with the outdoors, they can also exist within your home, in the form of house dust mites and storage mites, which are prevalent year round; the effect of multiple allergen sources can sometimes make seasonal allergies even more extreme for pets. 

In addition, while seasonal allergies tend to peak when plants are in bloom, allergic reactions may persist even after blooming is over because allergens remain on the surfaces of grass and in the home environment, according to Gentry. 

Allergy season can also be extended because of how far allergens are able to travel with the wind.

“Allergens can move many miles,” Gentry said. “We typically think of pollen moving within a region, but there is documentation that red cedar allergens — the cause of winter-cedar fever — can move from north Texas/Oklahoma into Canada with the right wind directions.”

Non-Stop Irritation

Humans commonly react to allergies with upper respiratory signs such as sneezing and eye redness, but these reactionary symptoms are uncommon in dogs, according to Gentry. 

Instead, pets that are affected by seasonal allergies are frequently observed exhibiting the following symptoms:

  • Itching
  • Scratching
  • Licking at the skin
  • Biting and chewing at the skin
  • Rubbing/rolling on grass, floors, and furniture
  • Rear end scooting

“It is important to remember that dogs’ immune systems contact the allergens mainly via a skin route, with the respiratory system playing a much smaller role,” Gentry said. “This is why we see skin and ear signs in dogs with allergies much more commonly than respiratory signs.”

Searching For Relief

Because diagnosing allergies in companion animals can be quite difficult, veterinarians will often start by ruling out all other possible causes of an itch, such as parasites or food allergies.

If these allergens have been ruled out or are being concurrently managed, a veterinary dermatologist like Gentry will move onto allergy testing through methods such as performing a blood draw used for serum testing or an intradermal (into the skin) test after sedating the dog.

“This allows veterinarians to create immunotherapy injections or prescribe oral immunotherapy in order to best combat the effects of the allergy,” she said. “Other tests that are available online using hair or saliva are not accurate and are not recommended in reference to pet allergies.”

Mark Your Calendar

With avoidance of allergens being nearly impossible, since common allergens can be found both indoors and outdoors, the first step in managing seasonal allergies is keeping watch for clinical signs.

“Based on a pet’s history, an owner may already know that the dog has allergies every spring/summer and they should create a proactive strategy with their veterinarian to limit the severity of the clinical signs,” Gentry said.

Gentry also recommends bathing affected pets one to two times per week with a shampoo specified by the pet’s veterinarian to decrease allergen accumulation on the coat. 

“Owners should contact their veterinarian if there are any clinical signs associated with allergy, but especially if there is hair loss, odor, or redness to the skin, as this may indicate a skin infection that is secondary to the allergic skin inflammation,” Gentry said.

By staying on top of bathing and any other prescribed medications, owners can help ensure their pets’ spring is as painless — and itchless — as possible.

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the web at vetmed.tamu.edu/news/pet-talk. Suggestions for future topics may be directed to vmbs-editor@tamu.edu.

Allergy Sufferers Can Have Pets Too

lady and a cat

Allergies are among the most chronic conditions worldwide, according to the American Academy of Allergy Asthma & Immunology. Though many of us love companion animals, some pets, especially cats and dogs, can cause allergic reactions in people.

Dr. Mark Stickney, clinical associate professor at the Texas A&M College of Veterinary Medicine & Biomedical Sciences, explained why some people are allergic to cats and dogs.

“People are typically allergic to the dander and saliva of dogs and cats,” Stickney said. “Cats groom themselves more than dogs, so more people are allergic to cats and have more severe symptoms than those allergic to dogs.”

Though hypoallergenic pets have become more popular, Stickney said recent evidence has shown that there is no such thing as a hypoallergenic dog or cat. However, there are several breeds of dogs and cats that are purported to cause less severe allergic reactions.

“A few examples of dogs that may cause less allergic reactions include labradoodles, bichon fries, poodles, and Portuguese water dogs,” Stickney said. “Some examples of cats include Devon rex, Siamese, and Sphynx.”

If being around cats and dogs is a must, Stickney said there are some ways to alleviate pet allergies. Some options include bathing your pet weekly, getting a HEPA filter for your home, designating a “pet-free” room or area of your house, washing pet beds frequently, dusting and vacuuming your house regularly, and washing your hands after handling a pet. Seeing a physician about allergy treatment options also may help.

Additionally, Stickney said some allergic people can consider pets that are not known to cause allergies, such as lizards, ferrets, rats, and birds. However, Stickney reminds pet owners to do their research before getting a new pet.

“None of these animals should be ‘impulse buys’,” he said. “They all have unique husbandry and health care requirements.”

While allergies may affect our choice in pets, everyone can find a pet fit for them, even allergy sufferers.

Pet Talk is a service of the College of Veterinary Medicine & Biomedical Sciences, Texas A&M University. Stories can be viewed on the web at vetmed.tamu.edu/pet-talk. Suggestions for future topics may be directed to editor@cvm.tamu.edu .