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Trusted Information for a healthier you
An asthma attack (also called an asthma flare-up) happens when your asthma symptoms get worse suddenly. The airways in your lungs become inflamed and narrowed, making it hard to breathe.
An asthma attack occurs when the airways become swollen, narrow, and produce extra mucus. This makes your airways tighter and reduces the amount of air that can move in and out of your lungs. Asthma attacks can range from mild to life-threatening.
Symptoms can come on suddenly and may get worse quickly.
Trouble breathing or feeling like you can't get enough air.
A whistling or squeaky sound when you breathe.
Pressure or tightness in your chest.
Frequent coughing, especially at night or early morning.
Asthma attacks are usually triggered by something that irritates your airways or causes inflammation.
The airways swell and narrow, and extra mucus can build up. This makes it harder for air to move in and out of your lungs, causing breathing difficulty.
Learn how asthma affects your airwaysAsthma attacks can become severe quickly. Knowing what to do and when to get help can save your life.
Call emergency services or go to the nearest emergency room if you or someone else has:
This information is provided for general educational purposes only and is not a substitute for professional medical advice. If you or someone else is experiencing severe breathing difficulty or a medical emergency, seek immediate emergency medical care.