What are the signs of feline asthma?

Coughing or hacking with no hairball produced; Wheezing; Rapid or laboured breathing; Crouched posture with extended neck while coughing; Lethargy during episodes.

When should I contact a veterinarian?

Open-mouth breathing, blue-tinged gums or collapse is an emergency — do not wait to see if it passes.

Respiratory · Updated 2026-09-29

Feline asthma

Allergic airway inflammation causing coughing, wheezing and breathing difficulty, often mistaken for hairballs.

Urgent veterinary attentionCats

Veterinary examination relevant to feline asthma

Visual guide to warning signs including breathing difficulty, appetite loss, vomiting, mobility change, abnormal droppings and collapse — Changes in breathing, appetite, movement, digestion or alertness can need veterinary assessment. Collapse and breathing difficulty are emergencies.

Signs to watch for

Coughing or hacking with no hairball produced
Wheezing
Rapid or laboured breathing
Crouched posture with extended neck while coughing
Lethargy during episodes

Causes and risk factors

Airway hypersensitivity to inhaled triggers such as dust, smoke, scented products and pollens. Stress can worsen episodes.

How veterinarians diagnose it

Chest imaging and airway sampling help distinguish asthma from heart disease, parasites and infection.

Treatment and management

Typically inhaled corticosteroids delivered by a feline spacer chamber, sometimes with bronchodilators, plus trigger reduction at home.

Prevention

Use dust-free litter, avoid smoking and aerosols indoors, and keep weight healthy to reduce episode frequency.

Outlook

Usually well controlled long-term, though severe untreated episodes can be life-threatening.

Common questions

What are the signs of feline asthma?: Coughing or hacking with no hairball produced; Wheezing; Rapid or laboured breathing; Crouched posture with extended neck while coughing; Lethargy during episodes.
What causes feline asthma?: Airway hypersensitivity to inhaled triggers such as dust, smoke, scented products and pollens. Stress can worsen episodes.
How is feline asthma diagnosed?: Chest imaging and airway sampling help distinguish asthma from heart disease, parasites and infection.
How is feline asthma treated?: Typically inhaled corticosteroids delivered by a feline spacer chamber, sometimes with bronchodilators, plus trigger reduction at home.
Can feline asthma be prevented?: Use dust-free litter, avoid smoking and aerosols indoors, and keep weight healthy to reduce episode frequency.
When should I contact a veterinarian?: Open-mouth breathing, blue-tinged gums or collapse is an emergency — do not wait to see if it passes.