TL;DR: Epistaxis, or a nosebleed, is a high-priority medical emergency in cats that requires immediate veterinary attention to prevent airway obstruction and identify serious underlying health issues.
What is epistaxis in cats and what are the common symptoms?
Epistaxis is the medical term for a nosebleed. In cats, this can range from small flecks of blood seen after a sneeze to a steady flow of bright red blood from one or both nostrils. Because cats are small and have a relatively low blood volume, any amount of blood loss through the nasal passages is a significant clinical sign that requires investigation. It often indicates an underlying issue, such as trauma, infection, or a systemic clotting problem.
Is it a medical emergency if my cat’s nose is bleeding?
- Urgency Level: High. Any active bleeding from a cat's nose should be treated as a medical emergency.
- Cats are obligate nasal breathers, meaning blood or clots can quickly obstruct their airway and lead to respiratory distress.
- Epistaxis can be a symptom of life-threatening conditions like rat poison ingestion or severe hypertension.
- Seek immediate veterinary care if your cat is bleeding, especially if they are also lethargic, have pale gums, or are struggling to breathe.
How can taking a photo of my cat’s nose help the veterinary team?
- A clear photo captures the exact color, consistency, and volume of the blood, which may change or stop by the time you reach the clinic.
- Photos help the vet identify if the bleeding is unilateral (one nostril) or bilateral (both nostrils).
- Visual evidence provides a critical diagnostic clue in determining the source and severity of the problem.
Clinical Context (Merck Veterinary Manual)
In cats, epistaxis can be caused by oronasal neoplasia, dental disease (oronasal fistula), nasal foreign body, or nasopharyngeal disease (foreign body or mass lesions). A chronic nasal discharge that was initially unilateral but becomes bilateral or changes in character from mucopurulent to serosanguineous or hemorrhagic suggests neoplastic or mycotic disease. Diagnostic evaluation should include a CBC, serum chemistry profile, and urinalysis to exclude concurrent systemic disease. If epistaxis is present, a one-stage prothrombin time, partial thromboplastin time, and buccal mucosal bleeding time should be considered in addition to a platelet count. Imaging of the nasal chambers via nasal/dental radiographs or CT is recommended. Rhinoscopy and nasal flushing are also valuable diagnostic tools, but should be delayed until after imaging to avoid iatrogenic changes.
Chapter: Otorhinolaryngology, Diagnostic Imaging, Clinical Pathology
Source: The Merck Veterinary Manual, 11th Edition (Page 1480)