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Feline Lower Urinary Tract Disease (FLUTD) - Symptoms & Prevention

Understand FLUTD symptoms and learn prevention strategies including proper hydration.

Mar 10, 2026

What is Feline Lower Urinary Tract Disease (FLUTD)?

FLUTD is an umbrella term for diseases affecting the bladder and urethra. It includes urolithiasis, feline idiopathic cystitis (FIC), bacterial cystitis, and anatomical abnormalities. About 55–65% of FLUTD cases are idiopathic. Male cats face much higher blockage risk due to their narrow urethra — obstruction is a medical emergency.

Feline Lower Urinary Tract Disease

Feline Lower Urinary Tract Disease

FLUTD Causes by Category

CauseFrequencyKey FeatureTreatment
Idiopathic cystitis (FIC)55–65%Stress-relatedEnvironmental enrichment
Urolithiasis15–22%Crystal or stone formationPrescription diet, surgery
Bacterial cystitis1–8%More common in older catsAntibiotics
Urethral obstructionMales primarilyImmediate emergency careCatheterization, hospitalization

FLUTD Symptoms

  • Frequent urination with small amounts
  • Straining to urinate
  • Blood in urine (hematuria)
  • Urinating outside the litter box
  • Excessive licking of genitals
  • Lethargy and decreased appetite

⚠️ Emergency: Urethral Obstruction

If a male cat cannot urinate at all, cries while straining, or shows vomiting/lethargy — go to an emergency vet immediately. Complete urethral obstruction can be fatal within 24–48 hours.

Diagnosis & Treatment

Urinalysis, ultrasound, X-ray, and bloodwork identify the cause. Treatment varies: diet, antibiotics, fluids, or emergency catheterization. Increasing water intake and reducing stress are most effective for preventing recurrence.

Medical Disclaimer

⚠️ If you notice FLUTD symptoms, see a vet promptly. Inability to urinate is an emergency. This article is for informational purposes only.

Curious about urinary health? Check out our cat water intake guide.

Sources & References

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