FLUTD in cats: the blocked bladder that can't wait until morning

Feline lower urinary tract disease (FLUTD) is an umbrella term for the conditions that make cats strain, cry, and visit the litter box again and again. Most cases are cystitis — painful but manageable. Some are obstructions — and a blocked cat can die within 24–48 hours. Telling them apart is not something to attempt at home.

The signs of lower urinary tract disease: frequent trips to the litter box producing little or no urine, straining, crying out, blood in the urine, urinating outside the box (often on cool surfaces like tiled floors or the bath), and over-grooming the belly or genital area.

The emergency version: a male cat (they are at far higher risk due to their narrow urethra) who is straining with no urine produced, increasingly restless or lethargic, vomiting, or crying when his abdomen is touched. That is a blocked bladder. Go to an emergency clinic now — this does not wait for an appointment, and it does not resolve on its own.

The most common cause of FLUTD in younger cats is feline idiopathic cystitis (FIC) — an inflammation strongly linked to stress. Other causes include bladder stones, and less commonly infection (which becomes more likely in older cats and those with kidney disease or diabetes). Diagnosis needs a urinalysis and often imaging.

Prevention is genuinely effective for FIC: increase water intake (wet food, fountains, multiple water stations), keep litter boxes clean and plentiful (one per cat plus one extra), reduce stress with predictable routines and vertical space, and manage weight. Multi-cat households should audit resources — competition over boxes, food and resting spots is a classic trigger.

If your cat has had one episode, take every recurrence seriously and keep your vet informed — repeated obstruction can change the long-term management conversation, and early intervention keeps options open.