[header] How to recognize asthma [title] Notice any unusual coughing. [step] Coughing is one of the most common symptoms of asthma. If you cough frequently, even when you're not sick with a cold or flu, you may have asthma. 
Take note of your coughing throughout the day and mark when it tends to occur. [substeps] With asthma, coughing tends to occur often at night.