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What is asthma? Asthma is a chronic (long-term) lung disease. It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed and narrowed. This can cause wheezing, coughing, and tightness in your chest. When these symptoms get worse than usual, it is called an asthma attack or flare-up. What causes asthma? The exact cause of... https://medlineplus.gov/asthma.html
MedlinePlus matched the above topic(s) to ICD-10-CM J45.40. ICD-10-CM stands for the International Classification of Diseases, 10th edition.
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