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My cat has urinary issues. What is FLUTD or feline urologic syndrome?

Updated On September 23rd, 2025

What is feline urologic syndrome

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on October 5th, 2017

Feline Urologic Syndrome (FUS) is now called Feline Lower Urinary Tract Disease (FLUTD) or Feline Idiopathic Cystitis (FIC). It is a condition involving, as the name states, the lower urinary tract (bladder, urethra). The condition presents with inflammation, difficulty urinating or crystals in urine. A major cause is thought to be stress. You can read more about the condition here: http://www.peteducation.com/article.cfm?c=1+2134&aid=214

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