Feline Immunodeficiency Virus – FIV

Feline Immunodeficiency Virus (FIV) is a serious viral disease of cats that is similar to HIV/AIDS in humans. About 1 3% of cats in the United States are infected. It does not affect other animals or people. FIV can sometimes be prevented, but not cured.

How Cats Get the Virus
FIV is spread mainly through bites that occur when cats fight. Rarely, mother cats pass the virus to their kittens during pregnancy, birth or nursing. Blood transfusions are another potential, but uncommon, source of infection. FIV does not survive outside a cats body, so the disease is not spread by casual contact or by sharing food bowls.
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What the Disease Does
When cats first become infected, there are few if any symptoms. Some cats develop a fever, swollen lymph nodes, diarrhea or anemia. Once infected, almost all cats harbor the virus for life but many remain healthy for years. At some point the virus attacks the immune system, leaving the cat unprotected against other diseases and parasites. Microorganisms that do not ordinarily harm healthy cats can make FIV infected cats severely ill.

Signs of FIV infection include loss of appetite, severe gingivitis (gum disease) and sores in the mouth, diarrhea, vomiting, anemia, eye disorders, nervous system disorders, chronic fever, and chronic infections of the skin, ears, and respiratory system.

How to Find Out if Your Cat Has FIV
Your veterinarian can perform a simple blood test to check for FIV. Its a good idea to test all new cats, especially if you already have other cats in your household. Cats that go outside should be tested every year. If your cat tests positive, follow-up tests can double check the accuracy of the first one. This is especially important for kittens under six months of age, in which positive results are often caused by immunity from the mother. If these cats test negative later in life, they likely were never infected with the virus.

Caring for FIV-Positive Cats
Although there is no cure for FIV, there are several steps owners can take to keep their FIV-infected cats as healthy as possible. To protect him from secondary infections and to prevent the spread of the virus, keep your FIV-positive cat indoors. It is preferable to separate him from uninfected cats. Keep him up to date on his routine veterinary care and vaccinations. Checkups are recommended every six months. Although FIV is incurable, treatment is given for secondary infections and to reduce symptoms. Immuno-modulators and antiviral drugs may also help.

Preventing FIV
Because FIV cannot be cured, prevention is crucial. Keeping cats indoors is the best method because it prevents exposure. Cats that do go outside should be spayed or neutered to reduce the likelihood of fighting. When adding a new cat to a household, test it before it meets its housemates. Infected and uninfected cats can live side-by-side without transmitting the infection as long as they don’t bite each other. However, there is always a risk.

A vaccine is available to protect against FIV, but the effectiveness of this vaccine is still questionable and most veterinarians do not recommend it (including myself), Also, there is no test to distinguish between a vaccinated cat and an infected cat. This creates a serious dilemma, since infected cats require special care. Worse yet, FIV-positive cats are commonly euthanized by animal shelters. Until new tests are developed, the decision whether or not to vaccinate will be a difficult one you need to discuss with your veterinarian.

Hyperthyroidism in Cats

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Hyperthyroidism Hyperthyroidism in CatsHyperthyroidism is the most common hormonal disease of cats. It is rare in dogs. The thyroid gland is located in the neck area and functions to regulate the metabolic rate. In hyperthyroidism, the gland becomes overactive. Most of the symptoms of hyperthyroidism are related to an increase in metabolic rate, stimulated by the overactive thyroid.

How Hyperthyroidism Occurs
Middle aged and older cats are most prone to hyperthyroidism. The cause, in most cases, is a benign tumor of the thyroid gland. Malignant tumors are uncommon. The thyroid tumor produces excessive quantities of the thyroid hormones, T3 and T4. These hormones are secreted into the bloodstream where they act upon all body tissues.

What the Disease Does
The most common signs of hyperthyroidism are weight loss, increased appetite, increased thirst and urination, hyperactivity, vomiting, and diarrhea. Some hyperthyroid cats will act aggressive. Stimulation by the thyroid hormones make the heart beat faster, a condition called tachycardia that is detectable by your veterinarian during a physical exam. Other heart abnormalities that can result include heart murmurs, abnormal heart rhythms, and high blood pressure. Eventually, heart damage and blindness may occur. Hyperthyroidism increases the blood flow to the kidneys, which has a flushing effect that can mask the signs of kidney failure.thyroid 300x209 Hyperthyroidism in Cats

How to Find Out if Your Cat Has Hyperthyroidism
Diagnosis begins with a good physical examination. Your veterinarian may be able to feel the enlarged thyroid gland. He will also check for heart problems. A simple blood test can detect high levels of T4. If your cat tests normal, but has symptoms of hyperthyroidism, your veterinarian may perform additional tests. Cats that test positive should have a complete blood panel to check for organ failures that may be hidden by hyperthyroidism.

Treatment for Hyperthyroidism
Before starting treatment for hyperthyroidism, the veterinarian must determine whether the cats kidneys are functioning properly. Once thyroid hormone levels return to normal with treatment, blood flow to the kidneys will be decreased. If significant kidney damage exists, this can trigger life-threatening kidney shutdown. A comprehensive blood panel and urinalysis provides some information about kidney function. Newer, more sensitive tests may also be recommended.

The most conservative option for treatment is daily medication given as a pill or a topical gel. This is not the most effective, and can have side effects. However, it is beneficial for temporary initial treatment. It may also be the safest long-term approach for cats with kidney failure. Side effects of drug treatment include poor appetite, vomiting, lethargy, hair loss and scabs on the face, and damage of the liver or bone marrow. Drug treatment does not cure hyperthyroidism, so medication must be given for life. Regular monitoring of thyroid levels and blood pressure are also required.

Options that provide a true cure for the condition are surgery and administration of radioactive iodine. Radioactive iodine treatment has the advantage of a very high success rate, while avoiding the risks of anesthesia and surgery. The radioactive material is given as a single injection. It specifically targets the thyroid, destroying a portion of the tissue. The disadvantage is that the treatment is only available at certain specialty facilities.Gulf Coast Veterinary Specialists located in Houston has such a facility. Visit their site to learn more about radiation therapy. Feline Hyperthyroidism Also, the cat must be hospitalized for up to ten days to allow the radioactive material to be safely eliminated. Occasionally, too much thyroid tissue is destroyed, causing hypothyroidism. This requires lifelong treatment with oral medication.

Surgical removal of thyroid tissue can also be curative. The disadvantage of surgery is that it can be more risky, especially for cats that have heart problems. The parathyroid glands, tiny pieces of tissue located near the thyroid can be damage during thyroid surgery, resulting in problems with blood calcium control. As with radioactive iodine treatment, surgery can sometimes result in hypothyroidism.thyroid2 300x210 Hyperthyroidism in Cats

A new alternative treatment involves simply changing your cats diet to a restricted iodine diet. The researchers at Hill’s Pet Nutrition have launched the diet Y/D that restricts the levels of iodine that are required for the cat to produce the thyroid hormone. Without the iodine the cat’s level of thyroid hormone drops to normal levels and will stay in the normal range as long as the cat eats the Y/D exclusively.

We have several cats on the Y/D diet protocol right now and the levels have returned to normal and the cats are all doing well.

Feline Immunodeficiency Virus

spottedkitten Feline Immunodeficiency VirusFeline Immunodeficiency Virus (FIV) is a serious viral disease of cats that is similar to HIV/AIDS in humans. About 1 3% of cats in the United States are infected. It does not affect other animals or people. FIV can be prevented, but not cured.

How Cats Get the Virus
FIV is spread mainly through bites that occur when cats fight. Rarely, mother cats pass the virus to their kittens during pregnancy, birth or nursing. Blood transfusions are another potential, but uncommon, source of infection. FIV does not survive outside a cats body, so the disease is not spread by casual contact or by sharing food bowls.

What the Disease Does
When cats first become infected, there are few if any symptoms. Some cats develop a fever, swollen lymph nodes, diarrhea or anemia. Once infected, almost all cats harbor the virus for life but many remain healthy for years. At some point the virus attacks the immune system, leaving the cat unprotected against other diseases and parasites. Microorganisms that do not ordinarily harm healthy cats can make FIV infected cats severely ill.

Signs of FIV infection include loss of appetite, severe gingivitis and sores in the mouth, diarrhea, vomiting, anemia, eye disorders, nervous system disorders, chronic fever, and chronic infections of the skin, ears, and respiratory system.

How to Find Out if Your Cat Has FIV
Your veterinarian can perform a simple blood test to check for FIV. Its a good idea to test all new cats, especially if you already have other cats in your household. Cats that go outside should be tested every year. If your cat tests positive, follow-up tests can double check the accuracy of the first one. This is especially important for kittens under six months of age, in which positive results are often caused by immunity from the mother. If these cats test negative later in life, they likely were never infected with the virus.

Caring for FIV-Positive Cats
Although there is no cure for FIV, there are several steps owners can take to keep their FIV-infected cats as healthy as possible. To protect him from secondary infections and to prevent the spread of the virus, keep your FIV-positive cat indoors. It is preferable to separate him from uninfected cats. Keep him up to date on his routine veterinary care and vaccinations. Checkups are recommended every six months. Although FIV is incurable, treatment is given for secondary infections and to reduce symptoms. Immunomodulators and antiviral drugs may also help.

Preventing FIV
Because FIV cannot be cured, prevention is crucial. Keeping cats indoors is the best method because it prevents exposure. Cats that do go outside should be spayed or neutered to reduce the likelihood of fighting. When adding a new cat to a household, test it before it meets its housemates. Infected and uninfected cats can live side-by-side without transmitting the infection as long as they dont bite each other. However, there is always a risk.

A vaccine recently became available to protect against FIV. Unfortunately, there is no test to distinguish between a vaccinated cat and an infected cat. This creates a serious dilemma, since infected cats require special care. Worse yet, FIV-positive cats are commonly euthanized by animal shelters. Until new tests are developed, the decision whether or not to vaccinate will be a difficult one you need to discuss with your veterinarian.

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