1 Characteristics of Treacher Collins syndrome include: 2  eyes that slant downward, 3  very few eyelashes and a notch in the lower eyelids (colomboma eye), and. 4  ears that are absent or unusually formed. 5  Some affected individuals may have hearing loss).
Since productive cough is usually the manifestation of an underlying condition, if left untreated, the condition may worsen leading to multiple complications. For instance, a lung infection might spread to organs and damage them, a patient with asthma or COPD may develop difficulty in breathing etc.
However, much more serious illnesses can cause productive coughs as well. If your cough is productive and lasts longer than a week or two, contact your health care provider. If you are coughing up pink, frothy secretions, seek medical attention immediately. This can be a sign of a life-threatening condition.