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Feline Asthma (Allergic Bronchitis)
A chronic inflammatory respiratory condition similar to human asthma. Affects 1-5% of cats. Causes coughing, wheezing, and difficulty breathing. Manageable with proper treatment.
Last updated: 2026-05-02
Severity
moderate
When to Act
See Vet Today
Symptoms & Signs
Chronic cough
Often mistaken for hairball attempts — a dry, hacking cough with neck extended.
Wheezing
Audible whistling sound during breathing, especially on exhalation.
Exercise intolerance
Cat tires quickly during play or stops playing to cough.
Open-mouth breathing
Breathing with mouth open — a sign of severe respiratory distress in cats.
Cyanosis
Blue-tinged gums in severe attacks — a life-threatening emergency.
Behavioral Changes to Watch For
Pets can't tell us what's wrong. These behavioral changes are often the first clues that something is wrong.
🐾 Coughing after activity or excitement
Play or stress triggers coughing fits.
What You May Notice:
Your cat starts coughing after chasing a toy or during a stressful event.
🐾 Reduced activity
Cat learns that activity triggers breathing difficulty and becomes sedentary.
What You May Notice:
Your cat stops initiating play and prefers to rest.
Causes & Risk Factors
Causes
- •Allergic hypersensitivity to inhaled allergens (dust mites, pollen, mold, cigarette smoke, litter dust)
- •Chronic airway inflammation leading to bronchoconstriction and mucus hypersecretion
- •May have a genetic component — Siamese cats may be predisposed
Risk Factors
- ⚠Siamese and Oriental breeds (higher incidence)
- ⚠Exposure to cigarette smoke
- ⚠Dusty clay litter
- ⚠Poor ventilation
- ⚠Obesity
How It's Diagnosed
- 1Chest radiographs — bronchial/interstitial pattern, air trapping, donut signs (thickened bronchi)
- 2Bronchoalveolar lavage (BAL) — eosinophilic inflammation
- 3Heartworm test to rule out heartworm-associated respiratory disease (HARD)
- 4Fecal Baermann for lungworm (Aelurostrongylus)
- 5Response to bronchodilators supports diagnosis
Treatment Options
Inhaled Corticosteroids
First-line for chronic management. Delivered via feline aerosol chamber (AeroKat).
Steps
- 1.Fluticasone propionate (Flovent) inhaled twice daily via AeroKat spacer
- 2.Gradually taper to lowest effective dose
- 3.AeroKat mask: fit over nose and mouth, hold for 7-10 breaths
- 4.Much safer than systemic steroids for long-term use
Expected Outcome
Good control of inflammation in most cats with minimal systemic side effects.
Precautions
- !Takes 1-2 weeks for full effect
- !Must be given consistently
- !Not for acute attacks
Bronchodilators (Rescue Therapy)
For acute attacks or breakthrough symptoms.
Steps
- 1.Albuterol (salbutamol) inhaled via AeroKat for acute attacks
- 2.Terbutaline — oral or injectable alternative
- 3.Use only as directed — overuse can worsen inflammation
Expected Outcome
Rapid relief of bronchoconstriction within minutes.
Precautions
- !Albuterol overdose can cause tachycardia and tremors
- !If rescue use exceeds 2x/week, controller therapy needs adjustment
Environmental Modification
Reducing allergen exposure.
Steps
- 1.Use dust-free, unscented litter (paper, wood pellets, or silica)
- 2.HEPA air purifiers in the home
- 3.No smoking in the house
- 4.Regular vacuuming with HEPA-filtered vacuum
- 5.Keep cat out of rooms during heavy cleaning
Expected Outcome
Reduced frequency and severity of asthma attacks.
Precautions
- !Changes should be gradual to avoid stress-induced flare-ups
Common Medications Used
| Medication | Usage | Important Notes |
|---|---|---|
| Fluticasone (Flovent) | Inhaled corticosteroid for chronic asthma management | Given via AeroKat feline aerosol chamber. Much safer than oral steroids long-term. |
| Albuterol (salbutamol) | Rescue bronchodilator for acute asthma attacks | Rapid onset. If used frequently, indicates poor asthma control. |
Prevention
- ✓Minimize dust and allergens in the home
- ✓Use low-dust cat litter
- ✓Avoid smoking, aerosols, strong fragrances around cats
- ✓Maintain healthy weight
- ✓Regular veterinary monitoring
When to See a Veterinarian
- ⚠️Open-mouth breathing — EMERGENCY, go now
- ⚠️Persistent cough for more than 2-3 days
- ⚠️Blue gums (cyanosis) — immediate emergency
- ⚠️Cough that looks like hairball but never produces one
Frequently Asked Questions
My cat coughs occasionally — could it be hairballs or asthma?
Prognosis
Good with consistent management. Asthma is a chronic condition — not curable but controllable. Most cats live normal lives with inhaled medication. Acute severe attacks can be fatal if untreated.
References
- [1] ISFM — Feline Bronchial Disease Guidelines
- [2] Vin — Feline Asthma Management
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