Blocked and infected urinary tracts are the most common illnesses of urban cats. There are several symptoms that can exhibit on their own or together:
Male and female cats can get the infection. Blockages are more common in male cats because females have a wider urethra that does not block as easily. Female cats suffer more often from urinary tract infection.
Cats are sensitive to this illness because they have stronger urine and they urinate more seldom. The stronger the urine, the more likely the crystals are. Cats often have sand-like sediment consisting of ammonium, magnesium and phosphate crystals. The crystals form in alkaline urine. Normally, urine is acidic, but cats with this disease tend to have alkaline urine.
Stones and crystals consist of e.g. magnesium and phosphorus. If the cat’s diet contains large quantities of these minerals, the formation of crystals is possible. If there are small amounts of these minerals, crystals will not be formed.
Crystals irritate the bladder and urethra, and therefore there can be blood in the urine. Crystals may even grow into stones. Crystals may block the urethra, preventing the cat from urinating. The changes make the cat vulnerable to bacterial infections. The condition is life-threatening, because if left untreated it will lead to uremia and death in a few days. The cat must always be taken to the vet if You suspect it may have a blockage in the urethra.