Asthma is a chronic lung condition that causes the airways to become inflamed and narrowed. This makes it difficult to breathe, especially during an asthma attack.

The symptoms of asthma can vary from person to person, but they may include:

• Shortness of breath: This is the most common symptom of asthma.
• Wheezing: Wheezing is a high-pitched whistling sound that can be heard when breathing.
• Chest tightness: Chest tightness is a feeling of pressure or tightness in the chest.
• Cough: A cough can be a symptom of asthma, especially at night or early in the morning.

The exact cause of asthma is not fully understood, but it is thought to be caused by a combination of factors, including:

• Genetics: Asthma is more common in people with a family history of the condition.
• Environment: Exposure to certain environmental triggers, such as allergens, smoke, and cold air, can trigger asthma attacks.
• Viruses: Some viruses, such as the respiratory syncytial virus (RSV), can trigger asthma attacks.
• Allergies: Allergies to things like pollen, dust mites, and pet dander can trigger asthma attacks.