FLUTD in Cats: Causes, Symptoms & Prevention
Dr. Priya Sharma
BVSc, MRCVS · Omelo Vet
Feline Lower Urinary Tract Disease (FLUTD) is an umbrella term for conditions affecting the bladder and urethra in cats. It's extremely common - affecting approximately 1–2% of cats every year - and can range from mildly uncomfortable to immediately life-threatening, depending on the underlying cause.
The components of FLUTD
:
1. Feline Idiopathic Cystitis (FIC)
- the most common cause (~50–60% of FLUTD cases) FIC is bladder wall inflammation with no identifiable infectious cause. It's strongly linked to stress - changes in routine, multi-cat tension, environmental disruption, and insufficient enrichment are major contributing factors. Signs include: straining to urinate, frequent small trips to the litter box, blood in the urine (haematuria), and vocalising while urinating.
FIC typically resolves within 5–7 days even without treatment, but recurrences are common. Environmental modification to reduce stress is the cornerstone of long-term management.
2. Urinary tract infections (UTIs)
- less common than in dogs (~5–15% of cases) Bacterial UTIs are more common in older cats, particularly females, and those with diabetes or kidney disease. True UTIs in healthy young cats are relatively uncommon - which is why repeated courses of antibiotics without diagnosis are inappropriate.
3. Bladder stones (uroliths)
Mineral crystals in the urine can aggregate into stones that irritate the bladder wall and can cause obstruction. The two most common types are struvite (magnesium ammonium phosphate) and calcium oxalate - each requiring different management.
4. Urethral plugs
Soft, semi-solid material (mucus, protein, crystals) can lodge in the urethra, particularly in male cats whose urethra is long and narrow. This causes complete urethral obstruction - a genuine emergency.
**Urethral obstruction: the emergency you must recognise**
A blocked male cat cannot urinate at all. Signs: repeated straining with no urine produced, crying out in pain, lethargy, vomiting, hiding. Within 24–48 hours, toxins (including potassium) accumulate in the blood, causing cardiac arrhythmias and death. Any male cat that strains without producing urine must be seen by a vet immediately.
Prevention strategies
: - Increase water intake: wet food dramatically increases urine production and dilutes urine, reducing crystal formation and bacterial concentration. Aim for at least 50% wet food. - Provide multiple fresh water sources (cat fountains work well) - Maintain ideal body weight - Reduce stress through environmental enrichment, vertical space, hiding spots - Multiple litter boxes in quiet locations
Need personalised advice for your pet?
This article provides general guidance. For advice specific to your pet's breed, age, weight, and health history - speak directly with a licensed vet via video call.
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