According to PetMD, symptoms associated with idiopathic feline lower-urinary-tract disease are blockage of urine flow, thickened, firm and contracted bladder wall, blood in the urine, painful or difficult urination and urinating in abnormal places. A urinary-tract disease is treatable with antibiotics and proper care.
According to PetMD, the causes of idiopathic feline lower-urinary-tract disease are spontaneous and unknown. One possible cause is a noninfectious disease called interstitial cystitis (painful-bladder syndrome). Another virus, known as calicivirus, can also be the cause of an infection. A lack of white blood cells or the presence of harmful bacteria can also cause urinary-tract diseases in cats.