What Is Feline Lower Urinary Tract Disease (FLUTD)?
Feline Lower Urinary Tract Disease (FLUTD) is an umbrella term for a group of conditions affecting the bladder and urethra. According to data from the Journal of Feline Medicine and Surgery(Gerber et al., 2005), FLUTD affects approximately 1–3% of cats and is one of the most common reasons for veterinary visits.
Common Causes
| Cause | Proportion | Characteristics |
|---|---|---|
| Feline Idiopathic Cystitis (FIC) | Approx. 55–65% | Stress-related, diagnosis of exclusion, most common in cats aged 2–6 |
| Urinary Stones | Approx. 15–20% | Struvite (magnesium ammonium phosphate) or calcium oxalate |
| Urethral Plugs | Approx. 10–20% | Primarily affects male cats, can be an emergency |
| Urinary Tract Infection (UTI) | Approx. 1–8% | Rare in young cats, more common in senior cats and those with CKD |
| Neoplasia | < 2% | Rare but should be ruled out |
Symptoms to Watch For
- Frequent urination: Repeatedly going in and out of the litter box, passing only small amounts of urine each time
- Difficulty urinating: Squatting for extended periods without producing urine, possibly vocalizing
- Blood in urine: Urine appears pink or contains visible blood
- Urinating outside the litter box: Possibly due to associating the litter box with pain
- Excessive licking of the genital area
- Behavioral changes: Hiding, decreased appetite, irritability
Urethral obstruction in male cats is an emergency! Male cats have a narrower and longer urethra, making them susceptible to blockage by crystals, mucus plugs, or stones. If a male cat repeatedly squats in the litter box butis completely unable to pass urine, this is an emergency that can be fatal within 24 hours, leading to acute kidney failure and life-threatening hyperkalemia. Seek veterinary care immediately.
Managing Feline Idiopathic Cystitis (FIC)
FIC is the most common form of FLUTD. According to research by Westropp & Buffington (2004) published in the Journal of Feline Medicine and Surgery, the cornerstone of FIC management is Multimodal Environmental Modification (MEMO):
- Increase water intake: Prioritize wet food, supplement with water fountains and multiple water bowls
- Reduce stress: Maintain a stable daily routine, provide environmental enrichment, use synthetic pheromones
- Optimize litter boxes: Provide an adequate number, keep them clean, and place them in appropriate locations
- Provide hiding spots and vertical spaces
- Avoid punishment
The study showed that MEMO can reduce the recurrence rate of FIC from 80% to approximately 40%.
Daily Tips for Preventing Urinary Tract Problems
- Adequate hydration: Aim for a total water intake of 40–60 ml per kilogram of body weight per day
- Appropriate diet: Discuss with your veterinarian whether a urinary-specific prescription diet is needed
- Maintain a healthy weight: Obesity is one of the risk factors for FLUTD
- Reduce stress: Environmental management is key to preventing FIC recurrence
- Regular health checkups: Including urinalysis
References
- Gerber, B. et al. (2005). Evaluation of clinical signs and causes of lower urinary tract disease in European cats. Journal of Small Animal Practice, 46(12), 571-577.
- Westropp, J.L. & Buffington, C.A.T. (2004). Feline idiopathic cystitis: Current understanding of pathophysiology and management. Journal of Feline Medicine and Surgery, 6(5), 295-305.
- Buffington, C.A.T. et al. (2006). Clinical evaluation of multimodal environmental modification (MEMO) in the management of cats with idiopathic cystitis. Journal of Feline Medicine and Surgery, 8(4), 261-268.