TL;DR: Thick white discharge in an unspayed cat is a sign of a life-threatening uterine infection called Pyometra and requires immediate emergency veterinary care. Do not wait for an appointment, as this condition can be fatal without prompt treatment.
What does it mean if my cat has thick white discharge from her vulva?
- Thick, white, or creamy discharge is usually pus.
- In intact (unspayed) cats, this is a classic sign of Pyometra, a life-threatening bacterial infection of the uterus.
- While it may occasionally indicate a severe vaginal or urinary tract infection, any discharge of this nature is considered highly abnormal.
Is thick white discharge in my cat a medical emergency?
- Urgency Level: High. Yes, this is a critical medical emergency.
- If the discharge is caused by Pyometra, the uterus is filled with infection and may rupture, leading to sepsis and death.
- Do not wait for a standard appointment; contact an emergency animal hospital immediately.
- Seek help even faster if your cat is lethargic, vomiting, or drinking excessive amounts of water.
How can taking a photo of the discharge help the veterinary triage team?
- A clear photo allows medical staff to see the exact color, thickness, and volume of the fluid.
- Visual evidence helps veterinarians quickly differentiate between normal mucus and infectious pus.
- It helps the clinic prioritize your cat's case (triage) the moment you arrive.
- Providing a photo allows the team to prepare for immediate diagnostic imaging or emergency surgery.
Clinical Context (Merck Veterinary Manual)
Vulvar discharge is a common clinical sign in feline reproductive diseases, with pyometra being an important differential diagnosis. In cases of open-cervix pyometra, a purulent or mucopurulent vulvar discharge, potentially containing blood, may be present. Diagnostic evaluation should include a digital vaginal examination, vaginoscopy, cytology, and potentially culture of the exudate, along with abdominal radiographs or ultrasonography to assess the uterus. Systemic signs, such as lethargy, anorexia, polyuria, polydipsia, and vomiting, may also be present, and can progress rapidly to shock and death, necessitating emergency intervention.
Chapter: Reproductive, Urology
Source: The Merck Veterinary Manual, 11th Edition (Page 1398)