What is asthma?
Asthma is a lung condition where the bronchial muscles contract, blocking the air and making it difficult to breathe. Various factors can trigger an asthma attack such as allergens, infections, pollution, trauma or fatigue. Asthma can be of two types: intrinsic and extrinsic.
Intrinsic asthma is a type of asthma which doesn’t have an identifiable cause of attack while extrinsic is the opposite. The triggering factor is known. Some asthma attacks are abrupt while some can last for several days. They often start after a few minutes of being exposed to a triggering agent.