TL;DR: Pus-like vaginal discharge in cats is a sign of Pyometra, a life-threatening uterine infection that requires immediate emergency medical attention.
What does it mean if my cat has pus-like vaginal discharge?
If you notice a thick, yellow, green, or creamy white discharge from your cat's vaginal area, it is most often a sign of a serious infection known as Pyometra. This is a condition where the uterus becomes filled with pus. It typically affects unspayed female cats after a heat cycle and is caused by hormonal changes that allow bacteria to thrive in the uterine lining.
Is pus-like vaginal discharge in my cat a veterinary emergency?
Yes. The urgency level for pus-like vaginal discharge is High. Pyometra is a life-threatening emergency. Without immediate treatment, the following risks occur:
- Toxins produced by the bacteria can enter the bloodstream, leading to sepsis.
- The infection can cause organ failure, specifically kidney failure, and death.
- If the cervix is closed, the uterus can rupture into the abdomen.
- You should contact an emergency veterinarian immediately if you see these signs.
How does sending a photo of my cat's discharge help the veterinarian with triage?
When you contact a veterinarian or a triage service, providing a clear photo of the discharge and the surrounding area can be incredibly helpful for the following reasons:
- Visual assessment allows the medical team to confirm the presence of purulent material.
- It helps veterinarians evaluate the specific color and consistency of the discharge.
- It allows the clinic to prioritize your cat's case based on the severity of the symptoms shown.
Clinical Context (Merck Veterinary Manual)
In cats, a purulent vaginal discharge, often containing blood, is a key sign of open-cervix pyometra, a potentially life-threatening condition. Physical examination may reveal lethargy, dehydration, uterine enlargement, and a sanguineous to mucopurulent vaginal discharge. While fever is not always present, signs can rapidly progress to shock and death. Diagnostic evaluation should include vaginal cytology to determine the nature of the discharge and exclude other causes. Pyometra should be differentiated from vaginitis, where systemic signs are absent and hemogram/biochemical profiles are normal.
Chapter: Reproductive, Urology
Source: The Merck Veterinary Manual, 11th Edition (Page 1398)