Asthma is a condition that causes your airways to swell and makes it difficult to breathe. This can cause coughing, shortness of breath, or a whistling sound when exhaling. There is currently no cure for asthma. It can be managed, however. Visit AFC Urgent Care Methuen for asthma treatment, as well as prescriptions for inhalers. If you are having difficulty breathing, visit the emergency room. Symptoms of Asthma Some patients with asthma can have infrequent ...