The symptoms of COPD are mild at first. They become more severe
and debilitating as the disease progresses. Normal Lung and
Emphysemic Lung Copyright © Nucleus Medical Media, Inc. Early
Symptoms of COPD Cough that produces a lot of mucus is a common
symptom of COPD. Coughing may be worse during a cold or
respiratory infection. A whistling or rustling sound may be
heard when exhaling, which is prolonged. Wheezing often worsens
with a cold or respiratory infection. Shortness of Breath This
symptom develops as COPD becomes progressively worse. At first,
shortness of breath may only occur with physical exertion. As
the disease becomes more advanced, it may occur after very
modest activity. When the illness becomes very severe, shortness
of breath occurs even at rest. Symptoms of More Advanced COPD
Severe Shortness of Breath and Chronic, Persistent, Productive
Cough Even very mild activities produce significant shortness of
breath. Repeated bouts of coughing with sputum production may
become disabling. Nighttime c