A wet cough, also termed as a productive cough, releases mucus or phlegm from the respiratory system. This liquid can be a range of colors, from clear to white, yellow or green, and comes from the respiratory tract. Causes of wet coughs can include viral or bacterial infections such as the flu, the common cold, or pneumonia.
Additionally, children or toddlers with wet cough often exhibit other symptoms like a runny nose, a scratchy throat, and tiredness. They may also experience postnasal drip, which feels like mucus running down the throat or chest.