Feline Lower Urinary Tract Disease (FLUTD) in Cats

Published on
Last updated on
3 min read

Key takeaways


Feline lower urinary tract diseases (FLUTD) lead to inflammation of some or all of the feline lower urinary tract (bladder, urethra).

  • The cause of FLUTD sometimes cannot be identified (idiopathic), but diet, injuries, behavioral issues, infections, and cancers may all contribute
  • FLUTD is diagnosed using urinalysis, blood work, x-rays, and ultrasound
  • Treatment varies and includes environmental and dietary modifications, pain medication, flushing of the urinary tract, urinary catheterization, behavioral medication, surgery, and palliative care
  • The prognosis varies depending on the cause and complications and recurrences are common
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A closer look: Feline Lower Urinary Tract Disease (FLUTD) in Cats


FLUTD is a general term referring to multiple types of lower urinary tract disease in cats. The predisposing factors and prognoses vary depending on the root cause. In general these disorders are characterized by frequent urination and difficulty urinating.

Urinary blockages are an emergency situation that will be fatal if not treated. Treatment in these cases is often complicated, requiring multiple procedures. Recovery from a urethral obstruction may take weeks and recurrence is common.

Risk factors


FLUTD is very common in cats and the severity varies widely depending on the underlying cause. Some cases are life-threatening (urethral obstruction, tumors) and some can be treated readily with a good prognosis (sterile cystitis).

Possible causes


The causes of FLUTD vary and there may be more than one potential cause in a given case.

Some cases of FLUTD have no known cause.

Main symptoms


Testing and diagnosis


Once a medical history and physical examination are complete, diagnostics to isolate the cause include:

  • Physical exam
  • Urinalysis
  • Blood work
  • Bacterial cultures
  • Imaging (X-ray, ultrasound)

Steps to Recovery


Treatment varies based on the root cause. Once the cause is known, treatment can be targeted. Strategies include:

  • Dietary alterations
  • Environmental changes
  • Flushing of the urinary bladder and urethra to remove stones and crystals
  • Surgical removal of tumors
  • Medications including NSAIDs to treat inflammation, analgesics to treat pain, and antibiotics for infection
  • Palliative treatments
  • Surgical or dietary removal of stones

The condition varies in prognosis depending on the root cause. Most idiopathic causes are chronic and treatment focuses on symptomatic care and minimizing frequency of episodes. For cases of cancer, which are rare, the prognosis can vary based on the progression of the disease and whether surgery is a possibility.

Prevention


Some types of FLUTD cannot be prevented. FLUTD is not contagious. General best practices to help prevent FLUTD include:

  • Maintain healthy diet formulated for urinary tract health
  • Keep fresh, clean water available
  • Have an appropriate number (1 for each cat plus one extra) of accessible litter boxes in quiet areas
  • Keep litter boxes clean
  • Reduce stress and minimize changes to routines

Is Feline Lower Urinary Tract Disease (FLUTD) in Cats common?


FLUTD is common in cats.

Typical Treatment


  • Flushing of the urinary tract
  • Urinary catheterization
  • Surgical removal of tumors or obstructions
  • NSAIDs
  • Analgesics
  • Palliative treatments
  • Antibiotics for bacterial infections (rare)
  • Surgical or dietary removal of stones
  • Dietary modification
  • Environment modifications to reduce stress (clean and accessible litter boxes, cat trees, scratching posts, toys, quiet areas for rest)

References


Idiopathic Cystitis in Cats
Wendy Brooks, DVM, DABVP - Writing for Veterinary Partner
Feline Lower Urinary Tract Disease
No Author - Writing for Merck Veterinary Manual
Idiopathic Cystitis in Cats
Wendy Brooks, DVM, DABVP - Writing for Veterinary Partner
Lower Urinary Tract Disease in Cats (also known as FLUTD)
Wendy Brooks, DVM, DABVP - Writing for Veterinary Partner
Sterile Cystitis (Pandora Syndrome) in Cats
Katherine James, DVM, PhD, DACVIM; Susan Klein, DVM, DACVIM - Writing for Veterinary Partner
Bacterial Cystitis in Small Animals
Scott A. Brown, VMD, PhD, DACVIM - Writing for Merck Veterinary Manual
Infectious Diseases of the Urinary System of Cats
Scott A. Brown, VMD, PhD, DACVIM - Writing for Merck Veterinary Manual
What are Lower Urinary Tract Diseases?
No Author - Writing for Cat Friendly
Cystitis and Lower Urinary Tract Disease in Cats
Tammy Hunter, DVM; Ernest Ward, DVM - Writing for VCA Animal Hospitals
Feline lower urinary tract disease
No Author - Writing for American Veterinary Medical Association
Urinary Stones (Uroliths, Calculi) in Cats
Scott A. Brown, VMD, PhD, DACVIM - Writing for Merck Veterinary Manual
Noninfectious Diseases of the Urinary System of Cats
Scott A. Brown, VMD, PhD, DACVIM - Writing for Merck Veterinary Manual
Noninfectious Diseases of the Urinary System of Cats
Scott A. Brown , - Writing for Merck Veterinary Manual
Noninfectious Diseases of the Urinary System of Cats
Scott A. Brown - Writing for Merck Veterinary Manual

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