Cat Diseases in Scottsdale, AZ

Cats can hide illness remarkably well, which means some diseases are already progressing before the first obvious symptom appears. At The Scottsdale Veterinary Clinic, we evaluate and manage conditions ranging from cat blocked urinary obstruction and cat kidney disease to feline infectious peritonitis, feline leukemia, and feline hyperthyroidism. Our approach combines physical examination, laboratory testing, imaging, urinalysis, blood pressure monitoring, and other diagnostics when appropriate. We want owners to understand what their cat’s symptoms may mean, why certain tests are recommended, and what treatment or monitoring may be needed as the condition changes over time.

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Cat Blocked Urinary Obstruction Is a Medical Emergency

A feline urinary obstruction occurs when urine cannot pass normally out of the body. The clinic’s urinary obstruction guide explains that inflammatory material, grit, or small stones may become lodged in the urethra, and male cats are particularly vulnerable because their urethra is much narrower than a female cat’s. Risk factors described in the guide include obesity, low water intake, dehydration, household stress, certain diets, urethral abnormalities or trauma, and living in a dry environment.

A cat blocked urinary obstruction is extremely painful and can become life-threatening if treatment is delayed. Possible complications include kidney damage, abnormal heart rhythms, and rupture of the bladder or urethra. Cats may strain repeatedly in the litter box, produce little or no urine, become increasingly distressed, or develop severe lethargy, so suspected obstruction should be treated as an urgent veterinary problem.

The standard treatment described in our clinic materials involves placing a urinary catheter under sedation or anesthesia to relieve the blockage, followed by hospitalization, IV fluids, pain medication, and medication to relax the urethra. We then monitor urine production and watch closely for re-obstruction after the catheter is removed. If stones are present or repeated obstruction becomes a problem, procedures such as cystotomy or perineal urethrostomy may be considered depending on the individual case.

Detecting Cat Kidney Disease Before Symptoms Become Severe

Cat kidney disease can develop gradually, and one of the challenges is that a cat may appear normal during early stages. Our chronic kidney disease guide notes that early warning signs may include weight loss, increased drinking, increased urination, constipation, and high blood pressure. Urine concentration, urine protein, kidney ultrasound findings, blood pressure, and laboratory testing can all contribute to identifying kidney problems before more severe symptoms appear.

As kidney disease progresses, cats may become more lethargic, lose weight, groom less, vomit, eat poorly, or become dehydrated. Laboratory values also change as the kidneys lose their ability to perform normal filtration and concentration. Our clinic’s recommendations emphasize repeated blood work, urinalysis, and blood pressure monitoring because kidney care often needs to be adjusted as the disease advances.

Management may include a kidney-supportive diet, encouraging water intake, phosphorus control, potassium supplementation when indicated, subcutaneous fluids, appetite support, medications, and other therapies based on the cat’s stage and test results. More advanced disease may require hospitalization, IV fluids, feeding support, treatment for anemia, or more intensive symptom management. The important point is that cat kidney disease is not treated with one fixed plan, because recommendations change with kidney values, hydration, blood pressure, appetite, and quality of life.

Understanding Feline Infectious Peritonitis

Feline infectious peritonitis, commonly called FIP, is associated with feline coronavirus, which is especially common in multi-cat environments. The clinic’s FIP guide explains that most cats exposed to feline coronavirus do not develop FIP. Some clear the infection, while others may continue shedding coronavirus without showing significant illness.

One reason feline infectious peritonitis can be difficult to diagnose is that detecting coronavirus or antibodies to coronavirus does not by itself confirm FIP. The clinic handout emphasizes that there is no single FIP-specific test described in the material, so diagnosis requires looking at the entire clinical picture. That may include age, living environment, symptoms, blood work, abdominal or chest fluid analysis, urinalysis, imaging findings, and sometimes tissue samples.

FIP may appear in a “wet” form, where fluid accumulates in the abdomen or chest, or a “dry” form involving organs such as the kidneys, liver, intestines, eyes, lungs, or nervous system. Symptoms can be vague and may include decreased appetite, weight loss, lethargy, fever, or simply a noticeable sense that the cat is not acting normally. Because those signs overlap with many other diseases, careful diagnostic evaluation is essential.

Feline Leukemia and the Importance of Testing

Feline leukemia virus, or FeLV, is a retrovirus that can be transmitted through close contact with infected cats, including exposure to saliva and from an infected mother to developing kittens. Some exposed cats eliminate the virus and develop immunity, while others remain infected and may develop disease involving the bone marrow, immune system, or other tissues. Latently infected cats may also be capable of transmitting the virus.

Diagnostic evaluation may involve specialized blood testing along with blood chemistry, hematology, imaging, or other tests depending on the cat’s condition. Treatment described in the clinic material is largely supportive for certain forms of disease, while lymphoma associated with feline leukemia may be treated with therapies such as chemotherapy and other supportive measures.

Prevention is an important part of feline leukemia care. Testing cats before vaccination, retesting after known or suspected exposure, and limiting contact between FeLV-positive and FeLV-negative cats can help reduce transmission risk. Kittens are particularly vulnerable, which is why early testing and vaccination discussions are an important part of preventive veterinary care.

Feline Hyperthyroidism Is Common in Older Cats

Feline hyperthyroidism is generally a disease of older cats, with the clinic handout listing an average diagnosis age of about 13 years. The hallmark sign is weight loss despite a strong appetite, but cats may also drink more, become restless, demand more food or attention, vomit intermittently, develop diarrhea, or urinate outside the litter box. During an examination, an enlarged thyroid lobe may sometimes be detectable in the neck.

Diagnosis commonly begins with blood work and measurement of the thyroid hormone T4. A clearly elevated T4 level strongly supports the diagnosis, while borderline results may require additional testing such as free T4 or a T3 suppression test. The clinic’s material also notes that hyperthyroidism is usually caused by benign thyroid tissue growth rather than cancer.

Treatment matters because uncontrolled feline hyperthyroidism can contribute to weight loss, muscle deterioration, vomiting, diarrhea, high blood pressure, and heart disease. Those complications can eventually affect vision, cardiovascular function, and overall quality of life, which makes timely diagnosis especially important in senior cats.

Symptoms That Should Prompt a Veterinary Visit

Many feline diseases begin with signs that seem nonspecific, which is why we encourage owners to pay attention to changes rather than waiting for a dramatic crisis. A cat that suddenly drinks more, loses weight, stops eating normally, repeatedly vomits, becomes lethargic, or changes litter box habits may be showing an early sign of a significant medical condition.

Contact our veterinary team if you notice:

  • Straining to urinate or producing no urine
  • Increased drinking or urination
  • Unexplained weight loss
  • Persistent vomiting or diarrhea
  • Significant appetite changes
  • Severe lethargy or weakness
  • Abdominal swelling or breathing difficulty
  • Repeated litter box changes
  • Restlessness in an older cat
  • Sudden changes in grooming or behavior

These symptoms do not point to one diagnosis by themselves. They tell us that further evaluation may be needed so we can determine whether the cause involves the urinary tract, kidneys, thyroid, an infectious disease, or another underlying problem.

Frequently Asked Questions

Yes. A urinary obstruction can become life-threatening and may lead to kidney damage, heart rhythm problems, or bladder complications. If your cat is repeatedly straining but producing little or no urine, contact a veterinarian immediately.


Yes. Early kidney changes may appear in urine concentration, urine protein, blood pressure, ultrasound findings, or other tests before obvious symptoms develop. Regular monitoring can help us recognize changes earlier and adjust care appropriately.


The clinic’s FIP handout states that diagnosis relies on a combination of findings rather than a single FIP-specific test. Blood work, fluid analysis, urine testing, tissue samples, clinical history, and symptoms may all contribute to the diagnosis.


FeLV is commonly evaluated through specialized blood testing, with additional laboratory tests or imaging used when disease is suspected. Cats with known or possible exposure may need repeat testing after the initial screening.


Weight loss despite a strong or increased appetite is the hallmark sign described in the clinic’s hyperthyroidism guide. Increased thirst, restlessness, vomiting, diarrhea, and behavior changes may also occur.

Get Answers When Your Cat’s Health Starts to Change

A small change in appetite, weight, thirst, urination, or behavior can sometimes be the first clue that a cat is dealing with a much bigger medical issue. At The Scottsdale Veterinary Clinic, we evaluate complex feline conditions with physical examinations, diagnostic testing, imaging, and ongoing monitoring based on what each patient actually needs. So whether you’re worried about urinary obstruction, kidney disease, feline leukemia, FIP, or hyperthyroidism, we can help you understand the next step. Just call our Scottsdale veterinary team to schedule an examination, and seek immediate care if your cat cannot urinate or is showing signs of a medical emergency.

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