Search Results for "allergies"

Hazards

Smoking

Overview

Smoking is the leading cause of lung cancer, which causes more deaths than any other form of cancer. Smoking affects both smokers and people nearby, through second-hand smoke.

Why is smoking hazardous?

There are three major reasons smoking is dangerous:

  1. “The nicotine effect”:

    Nicotine is one of the major chemical components in the tobacco leaves used to make cigarettes. Nicotine reaches the brain just a few seconds after smoking begins. The rich blood supply in the lungs picks up any chemical in the air very rapidly.

    Nicotine causes the nervous system to stimulate the release of adrenaline into the blood. When adrenaline increases in the blood, it causes the heart to beat faster, the blood vessels to constrict (to become more narrow), and the breathing rate to increase. Nicotine constricts blood vessels directly too. Constricted vessels create a large resistance for the heart to pump against. Nicotine also constricts the blood vessels in the heart and can promote heart attacks.

    Initially nicotine gives the brain a boost, but when the effect wears off, fatigue and depression set in.

    Nicotine is one of the most addictive drugs known. Just a few puffs can create cravings for nicotine in some people. And young people are more likely to get addicted quickly than older people!

  2. Lung irritation

    In addition to nicotine, the burning of tobacco produces other hazardous materials. Some of them are:

    Acetone – a solvent, used in nail polish remover, for example.

    Carbon Monoxide – an odorless, colorless poisonous gas that is lethal in large doses. In smaller doses, carbon monoxide causes increased heart rate and shortness of breath. Carbon monoxide attaches itself to the red blood cells and blocks their ability to carry oxygen.

    Formaldehyde – a preservative for dead bodies. In cigarette smoke, this chemical is a known carcinogen and causes respiratory problems.

    Hydrogen Cyanide – short-term exposure can lead to headaches, dizziness, nausea and vomiting.

    Lead – a highly toxic metal, capable of causing serious damage to the brain, kidneys, nervous system and red blood cells.

    Cigarette smoke contains many organic tars that irritate delicate lung tissue. As the irritation increases, the lung linings begin to break down, reducing the efficiency of the lungs. One common disease resulting from the break down of the lung linings is emphysema.

    In emphysema, the alveoli over inflate because they are trying to let more oxygen into the blood. This over inflation reduces the elasticity of the alveoli and makes them less efficient.

    As emphysema progresses the lungs become less elastic and can no longer clear the air out of the lungs.

    When the air remains in the lungs for a longer period of time than normal, the oxygen is depleted and carbon dioxide builds up.

    When carbon dioxide builds up in the lungs, the alveoli swell and may even burst open. This causes tissue damage and can lead to scar tissue.

    The lungs do not exchange old air for new air efficiently.

  3. Lung cancer- Smoking is the leading cause of lung cancer in the United States. Lung cancer causes more deaths in the United States than any other type of cancer. For more info click here. We will discuss this in depth on the next page.

    Similar problems occur with snuff and chewing tobacco. The nicotine effect is the same. The irritation and cancer effects can be the same, except it is the mouth that is affected instead of the lungs.

Lung Cancer

Overview

Although lung cancer is the leading cause of cancer deaths in the United States, it is also one of the most preventable kinds of cancer. At least four out of five cases are associated with cigarette smoking. More than 170,000 people in the U.S. are diagnosed with lung cancer each year, most between the ages of 40 and 70. Click here for more statistics.

What causes lung cancer?

Cigarette smoke has 4000 chemicals and of these, over 40 are known to cause cancer. Normal human cells become cancer cells when exposed to carcinogens.

The risk of developing lung cancer in humans is proportional to the number of cigarettes smoked. Smokers are 8-20 times more likely to develop lung cancer compared to people who have never smoked.

For nonsmokers, here is a normal, inflated lung to compare to the smoker’s lung below. This is what your lungs should look like.

The picture on the left is a smoker’s lung. Cigarette smoke has tars and chemical agents in it that irritate the lungs and cause lung cancer to form. The cancer cells in this picture are shown by the whitish area in an otherwise blackened lung.
Source: American Lung Association

Why is lung cancer a serious problem?

Over 300,000 people die from lung cancer in the United States alone. The economic loss is calculated to be over two billion dollars a year.
Since the majority of lung cancer is diagnosed at a relatively late stage, only 10% of all lung cancer patients are ultimately cured. If the patient cannot be cured by surgery at the time the cancer is found, there is a 50% chance that death will occur in less than one year.

What are the symptoms of lung cancer?
In its early stages, lung cancer normally has no symptoms. Most lung cancers begin to grow silently, without any symptoms. Patients with lung cancer often do not develop symptoms until the cancer is in an advanced stage. The actual time from when one cell becomes cancerous until it is large enough to be diagnosed or produce symptoms may take as long as 10 to 40 years. When symptoms start to appear, they are usually caused by blocked breathing passages or by the spread of cancer to other parts of the body.

Conclusion
Smoking causes cancer. The occurrence of lung cancer can be reduced by not smoking.

Passive Smoking (Secondhand Smoke)

The smoke emitted from the end of a burning cigarette has double the concentration of nicotine and tar when compared to the smoke actually inhaled by the smoker (through a filter). It also contains higher amounts of cancer-causing chemicals. This is because smokers inhale smoke that is filtered through both the unburned tobacco and the filter at the end of the cigarette. This means that non-smokers subjected to secondhand smoke breathe in a more potent smoke than smokers do. Therefore, non-smokers subjected to secondhand smoke may actually suffer worse consequences than the smokers themselves.

Here are some of the effects of second-hand smoking:

Lung Cancer – Long-term exposure to secondhand cigarette smoke has been shown to increase the risk of lung cancer by 20 – 30%. In fact, each year, hundreds of non-smokers die of lung cancer as a direct result of passive smoking.

Heart Disease – A study published in 1997 by the American Heart Association found that the risk of heart attack and subsequent death is 91% higher (i.e. almost double) for women who were regularly exposed to secondhand smoke when compared to woman who were not exposed. The risk was 58% higher for those who were only occasionally exposed.

Children – Children who are exposed to secondhand smoke have twice the risk of being hospitalized for chest illnesses such as pneumonia and bronchitis, than children not exposed to the smoke. They are also much more likely to get ear infections, tonsillitis, wheezing and childhood asthma. In fact, passive smoking in known to be one of the main contributory factors to the development of childhood asthma and has been shown to increase both the frequency and severity of the asthma attacks.

Now try answering a few questions about smoking and other nicotine products, in Activity 3.

Air Pollution

Overview
Everyday hundreds of toxic chemicals are released into the environment. Many of these chemicals are hazardous to our health and cause adverse reactions. Our body has some defense against these pollutants, but it is important to remember that we should do our best to avoid them. Let’s find out why.

What is air pollution?

Air pollution is a general term for a substance that contaminates the environment. For example, the exhaust emitted from cars contaminates the environment because it releases excessive amounts of ozone, carbon monoxide, nitrogen oxides, and lead.

Pollution can come from gases, particles, or liquids. Many times, these pollutants are man-made, but sometimes they can come from the environment. For example, pollen which is released by trees and plants, can become very abundant in the air we breathe and irritate those people who are allergic.


Why is air pollution so bad for your lungs?

Humans are a collection of organ systems all working together to keep the body in good working order. The body must maintain a balanced environment for the organ systems to function properly. When the body is exposed to pollutants, this balance can be disturbed. For example, when carbon monoxide, a deadly gas found in cigarette smoke and automobile exhaust, is inhaled into the lungs, it interferes with the bloods ability to take up oxygen. Click here to see how.

Some natural pollutants like pollen, ragweed, and molds trigger allergies in the body. Hay fever is a condition characterized by allergic reactions to these natural pollutants.
As the body is exposed to allergens, or allergy-causing substances, it begins to build up a defense. Once the body builds up a defense against a substance, it will release defensive substances like histamine to help protect the natural balance the body needs.

The release of histamine and other defensive substances can trigger itching, sneezing, tissue swelling, and sinus problems. While these may not be deadly, they are often inconvenient and can aggravate other conditions that may be present, like asthma.

Asthma is a condition where allergens like pollen, dust, or other kinds of pollution can cause the airways to become more narrow, and reduce airflow to the blood vessels in the lungs where gas exchange is taking place.


How can air pollution be prevented?

Air pollution cannot be prevented, but it can be reduced. Air pollution comes from many sources, some natural and others are man-made.

Automobile pollution is the largest contributor to air pollution in the United States. This can be reduced by increasing the use of public transportation systems, car pools, and reducing the amount of pollution vehicles cause.

Recycling is also a great way of helping reduce pollution. Recycling means that the factories which make goods for us, do not have to make as many products for us, and do not create as much waste which can pollute our environment.


Where is air pollution found the most?

Pollution is generally highest in large cities and industrial centers.

Pollution from natural sources like pollen from trees is a problem in the eastern and Midwestern United States.

Ragweed, which is the most common cause of hay fever, is found in most parts of the United States.

Pollution can also be an indoor problem. Some allergens like dust or cat and dog hair can build up inside homes and work places and cause extreme discomfort for individuals that are allergic to them. Another source of indoor pollution occurs from chemicals in new or remodeled buildings.

“Sick building syndrome” is a result of the build up of chemicals that are continuously released from new furniture, fabrics, detergents, paints, building materials.

“Sick building syndrome” is increasing in prevalence because buildings are becoming more efficient at heating and cooling the air in a building, by not circulating clean air from the outside into the building.

As chemicals build up in a building they can reach toxic levels and cause illness.

“Sick building syndrome” can be avoided by maintaining a clean environment with adequate circulation of air from the outside. It is also important to store hazardous chemicals properly. Buildings should also be inspected to make sure that the building materials used are safe to live or work in. Air vents and filters must be cleaned regularly to help reduce the number of airborne pollutants.

Procedures


What is skin scraping?

A skin scraping is a basic dermatological procedure. It is performed using a blade, a glass slide, and mineral oil. The skin is scraped either superficially or deep to search for mites (parasites) that live on the skin surface or hair follicle, respectively. This procedure is not intended to cut the skin, but rather scrape the skin. The area scraped will look like an abrasion (when you “skin” your knee) once completed. The sample is gathered on the glass slide with mineral oil and examined under a microscope.

Demodex Mites
Scabies Mite from skin scrape

LEFT: Demodex Mites.

RIGHT: Scabies Mite.


What is cytology?

Skin cytology is a basic dermatological procedure. It can be performed in several ways but the intent is the same, to collect a sample in search of cells and micro-organisms (bacteria and yeast) which may be contributing to the skin or ear condition. One technique is to rub a glass slide on a lesion (sore). Another way is to repeatedly press clear acetate tape on a lesion and then fixing the tape to a slide. Lastly, a cotton swab (especially for ears and body folds) or blade may be used to smear collected contents on a glass slide. Regardless of the technique, each slide is stained and examined under the microscope.

Bacteria
Yeast

LEFT: Bacteria.

RIGHT: Yeast.


What is skin biopsy?

A skin biopsy is a procedure used by dermatologists to collect a small sample of full-thickness skin. This is usually done after other diagnostics such as skin scraping and cytology have already been performed. In many cases, several small samples (about the size of pencil eraser) are obtained using a biopsy punch. Other times, a larger skin sample may be necessary. The skin is then closed with a couple of sutures (stitches) which will need to be removed several days later. Depending on the body location being biopsied, a local anesthetic (skin numbing agent such as lidocaine), brief sedation, and/or general anesthesia is required to minimize the patient’s pain and anxiety involved in sample collection. In many instances, minimal clipping of fur is necessary to assure a good biopsy sample. Once the biopsy is collected, the dermatologist sends the tissue to a dermatopathologist (pathologist who specializes in skin disease) for processing, microscopic evaluation, and interpretation. This process generally takes about one week. Skin biopsy is particularly useful for evaluating potential auto-immune skin diseases, hair follicle disorders, deep infections, and cancer. Often, the skin biopsy will allow the dermatologist to exclude several serious skin diseases if a specific cause cannot be identified.

Punch biopsy taken from a miniature horse.

Punch biopsy taken from a miniature horse.


What is video otoscopy?

Video otoscopy

Video otoscopy allows the dermatologist to magnify and examine the external canal and tympanic membrane (ear drum) in a patient’s ear. The video otoscope is a small, cone-shaped camera that is placed in a patient’s ear canal allowing the dermatologist to visualize and assess the presence and extent of disease. Depending on the nature of the patient, sedation may be necessary during examination. Video otoscopy is frequently used to help determine what may be contributing to patient’s ear disease. It can allow the dermatologist to see whether there is swelling or even if a growth is present in the ear. Likewise, the magnified field of view helps the dermatologist collect samples for culture and biopsy when necessary. Video otoscopy is also utilized during irrigation (flushing) of the external ear canal and middle ear. This allows the dermatologist to assure correct placement of cleaning tools and adequate removal of debris from the ear canal. An added feature of the video otoscope is that it has the ability to take pictures of your pet’s ear canal to illustrate what the dermatologist is seeing, and document the severity of disease so treatment response can be assessed in the future.

Normal ear canal
Ear cleaning procedure

LEFT: Normal ear canal.

RIGHT: Ear cleaning procedure.


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). This test followed by tailor-made allergy shots 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. The side of the chest will be shaved in the shape of a rectangle and small black Sharpie pen dots will be put in a linear array on the shaved skin allowing us to know where to make each injection. A panel of allergens is then injected in the skin. The size of any developing wheals is recorded. The entire procedure last approximately 30 minutes. Importantly, this test is used for environmental allergies (atopic dermatitis), not food-related allergies.

Intradermal Testing

Intradermal Testing

Skin Testing

What is skin testing?

Skin Testing

Intradermal 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). This test followed by tailor-made allergy shots 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. The side of the chest will be shaved in the shape of a rectangle and small black Sharpie pen dots will be put in a linear array on the shaved skin allowing us to know where to make each injection. A panel of allergens is then injected in the skin. The size of any developing wheals is recorded. The entire procedure last approximately 30 minutes. Importantly, this test is used for environmental allergies (atopic dermatitis), not food-related allergies.

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.

DRUG WITHDRAWAL TIME
Topical steroids (ears, skin, or eyes) 15-30 days (2-4 weeks)
Oral steroids 30-60 days (4-8 weeks)
Injectable steroids 70-84 days (10-12 weeks)
Topical or oral antihistamines 10-14 days (2 weeks)
Fatty acid supplementation (if possible) 14-21 days (2-3 weeks)
Tranquilizers 2-3 days (0.5 weeks)
Cyclosporine Case by case basis

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

Antibiotics, antifungals, flea prevention, 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.

Coming Together for Brooke

As a second-year veterinary school student, I think I can speak for everyone when I say that veterinary school has a funny way of warping your priorities in life.

With the high volume of information and stress that students are typically under, it’s very easy to let things like sleep, self-care, and maintaining relationships fall to the wayside in favor of reviewing just one more lecture or finishing just one more assignment until you look up to find that it’s midnight.

This was the unfortunate cycle I found myself in just two weeks ago as I tried to catch up on school after missing a week because of the flu. I likely would’ve continued this way until at least Spring Break.

However, life had other plans.

Friday, Feb. 21, found me not carefully following my meticulous study schedule like I had planned for the weekend but holding the hand of my best friend in the emergency room.

She had been experiencing shortness of breath for a couple of weeks but, as we all do, decided to attempt to manage her symptoms the best she could until we had a break in exams. If she was still experiencing issues at that point, she would go to the doctor to see about getting treatment, since it was more likely something like bronchitis rather than allergies.

Neither of us could have ever been prepared when the doctor informed us they had found a mass roughly the size of an orange sitting in the center of her chest and the cause for the shortness of breath she was experiencing was likely cancer.

In that single instance, my priorities completely rearranged.

No longer was I worried about the upcoming assignment that was due or catching up. My No. 1 priority became doing anything and everything I could to support my best friend.

The next 48 hours were a blur of family, meetings with doctors, discussing hospital possibilities, and developing a plan of action. As we progressed through the week, faculty members and our classmates were informed of the events of the weekend.

I am still in awe of the response. I watched as my classmates completely reorganized their lives, and the hours that were normally spent secluding ourselves in a study bubble were readily forgotten in favor of organizing events to support my best friend, which became top priority.

The way our CVM family has come together to support one of our own has been an amazing reminder that we are all here for the same dream, but we can’t accomplish that dream alone. Dreams and goals are so important, but they are nothing compared to the people beside us.

May you all remember to look up from the books once awhile and take in the life around you…because life comes at you fast.

 

When You Should—And Shouldn’t—Give Your Cat A Bath

An orange tabby cat licking a brown tabby cat

Bath time is usually a stressful occasion for both pets and their owners, leading many to wonder—is bathing cats really necessary?

To the relief of many a cat owner, the answer is typically “no,” according to Dr. Alison Diesel, a clinical associate professor at the Texas A&M College of Veterinary Medicine & Biomedical Sciences.

“In general, cats do not need to be given a bath by their owners,” she said. “Their fastidious grooming behavior makes this a non-necessary task, which most owners are quite thankful for.”

Some cats may not groom themselves appropriately because of obesity, arthritis, or an underlying medical condition. If an owner notices any change in their cat’s normal grooming behavior, a veterinarian can help determine the cause.

But even if these kitties need some help getting clean, a true bath is usually not necessary unless the cat is especially dirty.

“A good brushing may be sufficient unless there are fecal/urinary incontinence concerns,” Diesel said. “I rarely recommend bathing for my feline patients. There are certain topical products that I may consider for cats, like a leave-on antiseptic mousse if they have a skin infection, but a true bath is typically not recommended or indicated.”

For many medical conditions, from fungal infections to allergies, a bath with a medicated shampoo can be a treatment option, but Diesel said owners should be confident in their ability to safely bathe their pet first.

Beyond cats’ ability to clean themselves, Diesel usually recommends not bathing cats because of the damages it can cause to a cat-owner relationship.

“The act of bathing cats can cause behavioral trauma, which may affect the human-animal bond if this is not something the cat is used to,” she said. “For an adult cat that has not had a bath previously, the experience can be quite traumatic. They may lash out, bite, and scratch; this obviously introduces safety concerns for the owners.”

Although most cats rarely need baths, one major exception is for hairless Sphynx cats, which require bathing as part of their routine skin care.

“For cat breeds like Sphynx in which there are known genetic conditions that cause them to produce and secrete an excess amount of skin oil, routine bathing can help decrease the extra debris and the chance of secondary skin infections,” Diesel said. “In general, though, this doesn’t need to be more than once every one to two weeks.”

Owners of Sphynx cats can make the bathing process easier and less stressful by introducing it when the cat is young.

“Getting a Sphynx kitten used to baths early in life is imperative for managing this breed,” Diesel said.

She recommends using lots of treats and making the experience as fun as possible to help the cat feel safe and stay calm.

For most cat owners, however, bath time is, thankfully, a rare experience. As long as your fastidious feline spends plenty of time on hygiene, like most cats tend to do, you should not have to worry about bathing your water-fearing friend any time soon.

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.

Children and Pets: The Benefits and Risks

kid and dog eating icecream

Whether they want it to bark, purr, slither or squawk, there comes a time when a pet appears on nearly every child’s birthday wish list. For most parents, this decision can be a bit daunting. Is your child ready to take on the responsibility of caring for a pet? Will the new animal negatively affect his or her health? Though your child may think your wary attitude is unnecessary, these are valid questions for every parent to ask themselves and their family before welcoming a new pet into their home.

“The first thing that you need to think of is if your children are old enough and responsible enough to handle a pet around the house,” said Dr. Mark Stickney, Clinical Associate Professor at the Texas A&M College of Veterinary Medicine & Biomedical Sciences. “You also need to be aware of the temperament of the new pet that you’re bringing in.” Low maintenance animals, such as hamsters and fish, prove to be great starter pets for children. They require minimal amounts of time and care, introducing the child to the responsibilities of pet ownership without giving them more than they can manage.

Of course, puppies and kittens are always crowd pleasers as well. Their high energy level and love for attention makes them the perfect child companion. But what about when little Bobby begs for that snake at the pet store? “With animals like lizards and snakes, their care and feeding requirements can be a bit tricky as far as humidity, temperature etc.,” Stickney said. “These animals also eat other animals for food, which may be upsetting to some children. Depending on their age and maturity, that might be something beyond a child’s ability to handle.”

When choosing a family pet, it is also important to take into consideration your children’s sensitivity to various allergens. “One of the first things that you need to do is consult with your physician,” said Stickney. “If your child is allergic to pollen or some sort of grass that an animal could track into the house, an indoor animal such as a cat would be a non-issue.”

However, if your children still have their heart set on that fluffy puppy, there are certainly ways to accommodate their desires.  “Some dog breeds, such as Poodles and Yorkies, are considered to be less allergenic than others based on the amount of fur that they shed,” Stickney said. “And there is even evidence to support that infants exposed to animals earlier in life are less likely to develop allergies later on.”

Allowing your children to care for a pet is not all risk. Having a pet in your family has shown to be equally beneficial for both the animal and child. “Dogs especially really enjoy having someone to play with them, teach them tricks, and do some basic obedience training,” said Stickney. “It’s mentally stimulating for both the dog and child, which can improve discipline on both ends.”

Research has shown numerous health benefits of owning a pet, including lower blood pressure and elevated mood. There is even evidence to support that interaction between pets and children with disabilities, such as Down’s syndrome or Autism, is extremely beneficial. “The key is that you need to have a nice, docile pet,” Stickney said. “One that isn’t too active or rough, but that just wants to be loved on and to love right back.”

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.

Prevention of Fleas is Important Year-Round

Dog Scratching Flea

One of the worst things about this time of year is the increase of fleas on pets, outside, and, possibly, in homes. Flea prevention is crucial since adult fleas cause the most problems for pets. In order to become adult fleas, the blood-sucking creatures need warm weather, between 70 and 80 degrees Fahrenheit, and about 70 to 80 percent humidity, said Dr. Alison Diesel, lecturer in dermatology at Texas A&M University College of Veterinary Medicine & Biomedical Sciences (CVM).

“Those ideal conditions are exactly what we are experiencing during this time of the year, which is why we generally see more fleas coming out in the spring,” Diesel said.

She added that fleas can be present year-round in Texas because there is not usually a “true winter.”

Fleas can cause various problems for pets.  Some animals, for example, are allergic to an allergen in the flea saliva causing the animal to have an allergic reaction.  This causes the animal to scratch, which could lead to a secondary bacterial skin infection.  If there is a large flea problem, anemia could be a potential problem, especially among small animals that do not have large amounts of blood.  Fleas can also carry diseases such as tapeworms or Bartonella, and infect both pets and humans.

Amanda Friedeck, a veterinary technician at the CVM, said there is no way to completely prevent fleas, but a key factor to controlling fleas is breaking the life cycle.

“The best way to control fleas is to break the cycle.  More fleas lay more eggs.  … The best treatment either kills the adults or kills one of the juvenile stages,” Friedeck said.

Diesel said the flea life cycle has four phases: the adult fleas lay eggs, the eggs hatch into larvae, the larvae turns into pupae, which, eventually, turn into adults.

“Ideally, targeting several phases of the flea lifecycle is best, particularly when dealing with an infestation.  The easiest stage to target is the adult flea since these lives on the pet.  The other stages (eggs, larvae, pupae) are present in the environment,” Diesel said.

Both Diesel and Friedeck said the best way to determine treatment of an animal’s flea problem is to take them to a veterinarian to discuss the best options and medications.

“Your pet’s veterinarian can help recommend the most appropriate product to help prevent fleas based on other factors (e.g. other skin conditions, food allergies, etc.) as well as discuss the appropriate way to administer the product (e.g. orally or topically),” Diesel said.

Diesel suggested using a flea prevention that lasts the entire month and is still effective if the pet gets wet.

“Using flea prevention every 30 days, or more frequently in some situations, can provide the best protection from fleas biting your pet, can kill adult fleas rapidly, and can prevent a flea infestation from being established in your pet’s environment,” Diesel said

Diesel and Friedeck agreed that it is important to minimize an animal’s exposure to fleas by avoiding infested areas and pets coming in contact with animals that have fleas such as wild animals.

“There are some things which can be done to minimize exposure to fleas: avoid known infested areas, do not allow your pet to come into contact with wild animals or burrows, and protect areas of the house where wild animals may enter to minimize wild animals from establishing residency in the first place,” Diesel said.

If fleas become a problem inside the house, Diesel and Friedeck suggested vacuuming once a week.

“Vacuuming is a very good way to rid of fleas in the house, but the bag must be thrown away and removed from the house,” Friedeck said.

She added that if there is a large flea presence, there are in-house treatments and exterminators.

“There are some in-house treatments and bombs, but they should only be used in heavily burdened environments,” Friedeck said.

Diesel suggested focusing on places where the pets spends most of their time inside the house when bombing because that will contain the most concentrated area of fleas.

“Don’t forget under beds and furniture, behind curtains, and along hallways connecting rooms when treating the house for fleas.  Again, it may be best to contact a professional exterminator when there is a large flea burden present,” she said.

In addition to treating animals and inside of homes, it may be necessary to treat the outside environment.  This can be done by spraying areas of the yard that are high in flea population.

“This includes shaded areas, under trees and bushes, in dog houses, under porches and decks.  As with indoor control, when the burden is high, a professional exterminator may be the most help,” Diesel said.

Diesel said the best strategy against fleas is to practice year-round prevention by treating all pets with flea medicine as well as treating inside and outside the home if an infestation is suspected.

“It is much easier to prevent fleas than to treat fleas,” she said.

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 /pet-talk. Suggestions for future topics may be directed to cvmtoday@cvm.tamu.edu.

Don’t Brush Off Feline Dandruff

Dandruff may be a cosmetic inconvenience that many people dread, but cats can suffer from this condition as well.

A tabby cat licking its pawDr. Lori Teller, a clinical associate professor at the Texas A&M College of Veterinary Medicine & Biomedical Sciences, shares with pet owners the diverse causes of this condition and how to treat dandruff in a feline friend.

“The causes of dandruff in cats can range from relatively simple—such as obesity that limits a cat’s ability to groom, allergies, or the build-up of the undercoat—to more serious issues—such as fleas or a skin infection—to very serious issues—such as cancers like cutaneous lymphoma,” Teller said. “There is also a condition called ‘walking dandruff’ that is caused by the Cheyletiella mite. This mite is usually prevented by flea control products.”

Other potential causes of feline dandruff include other external parasites (such as ticks and demodectic mange), bacterial or fungal infections, malnutrition, or an interrupted ability to groom (caused by factors like kidney disease, diabetes mellitus, pancreatitis, or even discomfort from arthritis).

“If an owner notices dandruff, it is certainly worth having the cat checked to rule out an underlying problem, especially if the cat has other concurrent problems,” Teller said. “If the cat is itchy; losing hair; vomiting; has a change in appetite, water consumption, or litter box use; or if the owner notices skin lesions or parasites, it is worth a visit to the veterinarian.”

Teller also advises that cat owners who are allergic to their pet may be bothered by cat dander and that a veterinary visit may allow for treatment of the cat that can help alleviate allergy symptoms in their owner.

“The treatment for feline dandruff will depend on the cause,” Teller said. “Some parasites may be treated with good flea control. Infections may require topical or systemic antibiotics or antifungals. Certainly, any underlying systemic disease should be treated. If obesity or arthritis is part of the problem, weight loss or pain control may be recommended.”

If no underlying problems are determined, an owner might be advised to brush their cat daily to distribute their pet’s natural skin oils throughout the coat and remove existing dandruff. If a cat has long hair or a thick coat, the cat may need to be brushed several times a day.

Cat owners should consult their veterinarian to determine which grooming practices are best for their pet.

“If the dandruff is more than just a few flakes, if the cat is itchy or is not acting normally, or if anyone else in the family (human or animal) develops skin lesions, it is worth a trip to the veterinarian,” Teller said.

Although it is important for pet owners to practice their due diligence and check in with their veterinarian to rule out the more serious causes of feline dandruff, Teller says that in many cases, dandruff is a minor condition.

“Most of the time, dandruff is a benign problem for the cat,” she said. “Fortunately, other cats don’t judge them for flaky skin, so if your veterinarian gives your cat a clean bill of health, don’t get too bothered by the dandruff.”

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.

Identifying Lumps And Bumps With Diagnostic Testing

Corgi sitting in a veterinary waiting room

Lumps and bumps are a normal part of life, but what do we do when we notice a new lump or bump on our furry friend? 

When we take our pet to a veterinarian to examine a mass, the doctor may recommend diagnostic testing, which includes any medical screenings used to determine the cause of a pet’s symptoms, according to Dr. Sarah Jacobson, a clinical pathology resident at the Texas A&M School of Veterinary Medicine & Biomedical Sciences. 

“One of the first ‘diagnostics’ that a veterinarian performs is obtaining a medical history of the animal and performing a physical exam,” Jacobson said. “Because an animal cannot tell us specifically what is wrong or what is bothering them, we have to rely on what clues they can give us, such as changes in energy, weight, eating habits, or other clinical signs.” 

Locating Masses Through Diagnostic Testing

Diagnostically testing a pet through a physical exam can be especially useful for narrowing down causes of abnormal masses, which present themselves as small lumps or bumps on the body or under the skin. 

“There are many reasons an animal might have a lump, bump, or mass, and there are many places on the body where masses can exist,” Jacobson explained. “It could be an enlarged lymph node, joint swelling, cyst, inflammatory process, or even malignant (cancerous) or benign (noncancerous) tumors, but the location of the mass clues us in as to what the most likely tissue growth is. For example, when it comes to a mass in the nasal cavity or a tumor on the spleen, we have two completely different lists of what the most likely tumors are going to be in those locations.”

Additional Tests For Reaching A Diagnosis

Oftentimes, additional forms of diagnostic testing will be necessary in order to determine the exact cause of a pet’s ailment.

“There is a lot of information to be gained from a history and physical exam, but if this alone does not provide an answer, then the information is used to decide what diagnostics to perform next,” Jacobson said. “Forms of diagnostic testing can include performing blood work or an analysis of the urine, taking X-rays, collecting samples to view under a microscope, or testing for specific infectious agents such as viruses, bacteria, fungi, or parasites.”

For masses that have been located, veterinarians can narrow down the list of possible causes by using a form of diagnostic testing called cytology, a field of medicine focused on examining cells from bodily tissues.

“When it comes to testing a mass using cytology, veterinarians may perform a fine needle aspirate, which involves poking a needle into the mass and collecting cells to put on a slide for microscopic analysis,” Jacobson said. “Analyzing the cells can help veterinarians determine if the cause of a mass is because of an inflammatory reaction to irritants or a neoplastic process (when cells grow abnormally and lead to tumor growth).”

Inflammatory processes typically involve treating the cause of inflammation, but treating neoplastic processes can require more extensive treatment methods, including surgery or chemotherapy. 

“If it is an inflammatory process, we can see what inflammatory cells are present, signaling what the cause of the inflammation is, whether it is fungal, bacterial, allergies, or something similar,” she continued. “On the other hand, if it’s a neoplastic process, we can attempt to determine what the main cell type is and if the mass is part of a benign or malignant process.”

Next Steps After Testing

Jacobson emphasizes that testing these masses does not always give an exact answer as to what it is, yet it can help veterinarians either rule out a diagnosis or guide further diagnostic testing. 

Until an appropriate diagnosis is reached, Jacobson encourages owners to practice patience.  

“Finding a diagnosis is not always easy,” Jacobson said. “It takes veterinarians knowing what diagnostic step they want to take next, having a specific reason for that test, and being able to communicate next steps with owners. It also takes owners understanding that this can be a lengthy process, but they should still ask questions about the diagnostic tests their vet wants to run and how it will help their animal.” 

If you notice any pesky lumps or bumps on your pet, talk to your veterinarian about the diagnostic testing options that can help rule out possible concerns and, if necessary, get them on the road to recovery.

Choosing The Best Probiotic For Upset Tummies

A brown dog and tabby cat cuddling together by a sunny window

Having a stressed or sick pet is concerning, especially if diarrhea, gas, and digestive issues are present. A probiotic could ease those digestive issues, but there are some considerations that an owner should be aware of before choosing one.

Dr. Emily Gould, a clinical assistant professor at the Texas A&M School of Veterinary Medicine & Biomedical Sciences’ Veterinary Medical Teaching Hospital, explores reasons for using probiotics and what makes a probiotic more effective.

Probiotics are supplemental, live bacteria found in certain foods or pills that generally improve gut health when there is too much harmful bacteria present. This irregularity of bacterial imbalances can be caused either by an intestinal disease or following the use of antibiotics.

For example, when a pet visits the veterinary clinic because of an illness, a veterinarian may prescribe antibiotics to treat an infection. In addition to eliminating the bacteria making your furry friend sick, the antibiotics can also decrease beneficial bacteria, causing an imbalance in the digestive tract. Your pet may experience diarrhea as a result.

“The purpose of administering a probiotic would be to replenish ‘good bacteria’ in the pet’s gut in order to restore a healthier intestinal gut ecosystem, correcting the imbalance,” Gould said.

Because there are limited studies on probiotics in veterinary medicine, it can be difficult to decide which supplements are beneficial. The range of probiotics available offer different varieties, types, and amounts of good bacteria; while researching the best probiotic can take time, it will also benefit your pet in the long run.

“There are a few products that either have studies to show it benefits our veterinary patients, or veterinarians have enough experience with them to know they provide benefits,” Gould said. “For example, we think of probiotics with more different types of bacteria as being more balanced and in general ‘better’ probiotics to give. Increased diversity of good bacteria is associated with a better product.”

Probiotics should not cause any side effects as long as they are purchased from a reliable company that is known to be safe for pets, explained Gould.

For those whose pets are going through an elimination diet trial, a strict diet that slowly reintroduces foods to determine a pet’s allergies, Gould recommends looking at a probiotic’s label to make sure there is no flavoring. Probiotics from a reputable company will be of good quality and not have flavoring contamination.

“Many probiotic products will have animal protein flavoring or just not have good quality control during product manufacturing which can result in contamination,” Gould said. “This can definitely confound the effects of your food trial.”

Gould pointed out, however, that probiotics are supplements and will not treat other health issues. If there is chronic or severe vomiting, diarrhea, or changes in appetite, pet owners should take pets to their veterinarian to discuss the best solution.

“Although cats and dogs with chronic intestinal disorders might have symptoms that benefit from the probiotic, owners should know that probiotics are usually not a sole treatment,” Gould said. “Other diagnostics and therapeutics are usually necessary to find the root of the problem and treat it.”

Nevertheless, Gould says probiotics are great for pets with tummy troubles.

In the event your furry friend is having a tough time with their gut, talk to your veterinarian about different types of probiotics as a possible solution so that your pet can get back to feeling like themselves sooner. They might even thank you with a wagging tail!