Also known as (also known as feline bronchial disease, allergic bronchitis, bronchitis, allergic airway disease and allergic asthma). When exposed to an allergen, the following happens.

1. The muscles around the airways tighten and block the airflow.

2. The walls of the airways swell and become narrower, blocking the airflow.

3.The airways produce extra mucus, causing more narrowing.

As in humans, it is believed that there is a genetic predisposition for asthma.

Dry, hacking cough which may be mistaken for hairballs, wheezing, laboured breathing, exercise avoidance. Symptoms may be mild or severe. In mildly affected cats they may cough of wheeze occasionally. Severely affected cats may cough & wheeze daily, leading to airway constriction & open mouthed breathing/panting. A severe asthma attack can lead to death.