Cat Upper Respiratory Infection (URI): When It’s Mild — and When to Worry
About 2 min read
Cat URIs are common and often mild, but the key question is knowing when they will pass — and when they need treatment.
Your cat is sneezing, has watery eyes, or seems a little off, and you need to know: is this a mild URI that will pass, or something that needs treatment? A URI means a virus or bacteria has infected the nose, throat, or sinuses, causing the sneezing, congestion, and eye discharge that come with it. It's usually caused by a highly contagious virus like feline herpesvirus or calicivirus, often picked up through contact with an infected cat or during a stressful period that weakens the immune system. That depends entirely on your cat — their age, whether they're still eating, and what else you're seeing. There's no general answer that applies to every cat.
Whether this needs a vet today or can be monitored at home depends on your cat specifically — their age and whether they're still eating normally.
What Your Cat's Symptoms Might Mean
What This Usually Means
- Mild: sneezing but eating normally
- Moderate: reduced appetite and energy
- Serious: not eating and lethargic
- Severe: breathing issues or complications
When to Seek Emergency Care
- Not eating for more than 24 hours
- Difficulty breathing
- Severe lethargy
- Eye swelling or thick discharge
- Symptoms getting worse instead of improving
What You Can Do
- Monitor appetite and energy levels
- Keep your cat warm and comfortable
- Encourage eating and hydration
- Isolate from other cats if possible
- Seek vet care if symptoms worsen or persist
What Vets Usually Do
- Examine eyes, nose, and breathing
- Check hydration and overall condition
- Prescribe antibiotics or supportive medication if needed
- Recommend supportive care and monitoring
- Schedule follow-up if symptoms persist
What Determines Severity
- Appetite and hydration
- Energy level
- Severity of discharge
- Breathing quality
- Duration of symptoms
Typical Vet Cost Ranges
- Vet exam: $100–$250
- Medication: $50–$200
- Diagnostics: $100–$300
- Follow-ups: $50–$150
- Severe cases: $300–$1,000+
How Costs Change Over Time
- Mild stage: basic exam and supportive care
- Moderate stage: medication and follow-up
- Severe stage: diagnostics and extended treatment
- Complication stage: higher cost and longer recovery
What Increases Cost
- Worsening infection
- Need for diagnostics
- Multiple vet visits
- Secondary infections
- Delayed treatment
Common Causes
- Feline herpesvirus
- Calicivirus
- Bacterial infection
- Exposure to infected cats
- Stress or weakened immunity
When to See a Vet
- Symptoms lasting more than a few days
- Loss of appetite
- Worsening discharge or eye issues
- Breathing difficulty
- Kittens, senior cats, or weaker immune systems
Related guides
Frequently Asked Questions
How much does treatment cost?
Most cases cost $100–$300, but severe cases can exceed $1,000.
Is it contagious?
Yes, URIs spread easily between cats.
Can it go away on its own?
Mild cases may improve, but worsening symptoms need treatment.
How long does it last?
Most cases improve within 1–2 weeks.
When should I worry?
Loss of appetite, lethargy, or breathing issues are key warning signs.
People also ask:
How much does it cost to treat a cat URI?
Most cases cost $100–$300, but severe cases can exceed $1,000.
Are cat respiratory infections contagious?
Yes, they spread easily between cats.
Can a cat URI go away on its own?
Mild cases may improve, but worsening symptoms need vet care.
How long does a cat URI last?
Most mild cases improve within 1–2 weeks.
When should I worry about a cat URI?
Loss of appetite, lethargy, or breathing difficulty are key warning signs.
Last reviewed: . FurryMedAI provides educational guidance only and does not replace professional veterinary diagnosis or treatment. If your pet shows urgent or worsening symptoms, contact a veterinarian immediately.