Due to the chronic nature of this disease, the leading symptom of<unk>  is progressive exertional dyspnea. For acute on chronic cases, shortness of breath, cough, and respiratory failure are some of the more common signs.
Restrictive lung disease
Obstructive lung disease
Alveolar lung disease
Reactive airway disease
Pulmonary heart disease
Interstitial lung disease
Asthma
Radiation-induced lung injury