A cough is our body’s way of responding to irritants in the throat and airways. A cough that persists for long periods of time is not just frustrating, it can interfere with daily life and ruin a good night’s sleep. Chronic cough can usually be resolved by treating the underlying problem, however the difficulty is in figuring out what exactly is the cause. The most common causes are postnasal drip, asthma, and acid reflux, but it can also be caused by GERD, medications, and respiratory tract conditions such as asthma, bronchitis, or an infection, among other things.