Signs and symptoms of stages of<unk> . Shortness of breath A cardinal symptom of<unk>  is the<unk>  and progressive shortness of breath which is most characteristic of the condition. Shortness of breath (breathlessness) is often the most distressing symptom responsible for the associated anxiety, and level of disability experienced. Symptoms of wheezing, and chest tightness associated with breathlessness can be variable over the course of a day or between days, and are not always present. Chest tightness often follows exertion. Many people with more advanced<unk>  breathe through pursed lips, which can improve shortness of breath. Shortness of breath is often responsible for reduced physical activity, and low levels of physical activity are associated with worse outcomes. In severe and very severe cases there may be constant tiredness, weight loss, muscle loss, and anorexia. People with<unk>  often have increased breathlessness and frequent colds before seeking treatment. Cough The most often first symptom of<unk>  is a<unk>  cough, which may or may not be productive of mucus as phlegm. Phlegm coughed up as sputum can be intermittent, and may be swallowed or spat out depending on social or cultural factors, and is therefore not always easy to evaluate. However, an accompanying productive cough is only seen in up to 30% of cases. Sometimes limited airflow may develop in the absence of a cough. Symptoms are usually worse in the morning. A<unk>  productive cough is the result of mucus hypersecretion and when it persists for more than three months each year for at least two years, it is defined as<unk>  bronchitis.<unk>  bronchitis can occur before the restricted airflow diagnostic of<unk> . Some people with<unk>  attribute the symptoms to the consequences of smoking. In severe<unk> , vigorous coughing may lead to rib fractures or to a brief loss of consciousness.
Chronic obstructive pulmonary disease
Tracheobronchomalacia
Asthma
Bronchiectasis
Reactive airway disease
Pneumonia
End stage pulmonary disease
Acute bronchitis