TL;DR: Swelling on a cat's nose can range from simple abscesses to complex infections or tumors and typically requires a veterinary evaluation within 24 to 48 hours.
What causes the swelling on my cat's nose?
- A localized abscess resulting from a bite or scratch
- Fungal infections such as Cryptococcosis, which can cause a "Roman nose" appearance
- Dental issues, such as a tooth root abscess that has moved upward
- An inflammatory response to an insect sting
- Nasal polyps or tumors, which are more common in older cats
How urgently does my cat need to see a vet for a swollen nose?
While a swollen nose is rarely an immediate life-threatening emergency, it is considered a medium-priority case that should be evaluated within 24 to 48 hours. You should seek veterinary care sooner if you notice:
- Difficulty breathing through the nose
- Loud snoring sounds
- Significant discharge or bleeding
- A loss of appetite, as a cat's sense of smell may be compromised
Why should I provide a photo of my cat's nose for triage?
- Visuals allow a professional to assess facial symmetry and the presence of skin breaks
- Photos help identify the exact location of the bump
- A clear image helps the clinic determine if the swelling looks like an acute infection requiring antibiotics or a chronic growth requiring diagnostic imaging
- Photos ensure your pet is scheduled with the appropriate level of urgency
Clinical Context (Merck Veterinary Manual)
Facial swelling involving the bridge of the nose in cats warrants investigation into potential causes, including oronasal neoplasia, dental disease (oronasal fistula), nasal foreign body, or nasopharyngeal disease. Diagnostic evaluation should begin with a thorough history and physical examination to eliminate other causes of nasal discharge, sneezing, or facial deformation. Imaging of the nasal chambers via nasal/dental radiographs should be considered, although CT provides superior images of the nasal cavity and paranasal sinuses. More invasive diagnostic procedures such as rhinoscopy, retroflex nasopharyngoscopy, nasal flushing, and nasal biopsy may be necessary, but should be delayed until after imaging to avoid iatrogenic changes. If epistaxis is present, coagulation testing should be considered. Concurrent systemic disease should also be ruled out with a complete blood count, serum chemistry profile, and urinalysis.
Chapter: Infectious Disease, Respiratory, Wound Care
Source: The Merck Veterinary Manual, 11th Edition (Page 1468)