Feline lower urinary tract disease (FLUTD) encompasses several conditions causing painful urinary signs in cats. It is one of the most common reasons for veterinary attendance and a significant welfare concern, particularly in male cats prone to life-threatening urethral obstruction.
FLUTD is an umbrella term covering: feline idiopathic cystitis (FIC, most common — 55–65% of cases), urolithiasis (bladder stones — 15–25%), urethral plugs (primarily male cats — 10–20%), urinary tract infection (relatively uncommon in young cats — 5–10%), anatomical abnormalities, and neoplasia. Each category requires different management, making diagnosis beyond 'FLUTD' important for welfare and treatment decisions.
FIC is the most common urinary condition in cats under 10 years and the most welfare-significant in terms of chronicity. Its causes are incompletely understood but involve interactions between stress, bladder wall abnormalities, and neurogenic inflammation. Stress is a major precipitating factor — changes in household routine, multi-cat tensions, environmental changes, and owner stress all trigger FIC episodes. Signs include: straining to urinate, frequent attempts to urinate with small or no output, blood in urine, vocalisation when attempting urination, and inappropriate elimination. The pain and discomfort of FIC episodes is significant.
Urethral obstruction — blockage preventing urination — is a life-threatening emergency occurring almost exclusively in male cats (the narrower urethra in males predisposes). A blocked cat that cannot urinate for 24–48 hours develops: severe pain, hyperkalaemia (elevated blood potassium causing cardiac arrhythmia), post-renal azotaemia (kidney function impairment), and death if untreated. Any male cat straining repeatedly without producing urine requires emergency veterinary assessment immediately.
FIC management focuses on stress reduction and environmental modification: increased water intake (wet food diets, water fountains), environmental enrichment reducing multi-cat tension, increased litter box provision and quality, pheromone therapy (Feliway Classic), and for recurrent cases, anti-anxiety medication. Dietary modification to prescription urinary diets reduces recurrence. The MEMO (Multimodal Environmental Modification) approach systematically addresses litter box, feeding, play, and social stressors as a structured framework.
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