The condition of asthma is characterized by narrowed and swollen airways and excess mucus production. Breathing becomes difficult, causing coughing, wheezing, and shortness of breath when you exhale. Some people find asthma to be no more than a minor inconvenience but other cases can be more severe with some at risk of life-threatening asthma attacks, interfering with daily activities. It is not possible to cure asthma, but it is possible to control its symptoms. Tracking your signs and symptoms and adjusting your treatment as necessary is important because asthma often changes over time. If you experience frequent coughing or wheezing for more than a few days, or if you experience any other symptoms of asthma, consult your doctor. Early asthma treatment may help prevent long-term lung damage and keep the condition from worsening.