Dyspnea, cough, and fatigue are the symptoms characteristic of moderate-severe COPD. Within the progression of disease was also reported a prevalence of 34-77% of pain symptoms in these patients. A review observed a higher score in pain intensity/interference associated with multiples pain locations of COPD patients. Several studies reported that comorbidities, GOLD grade, and breathlessness may contribute to a higher pain prevalence in COPD patients because of the systemic inflammatory process and lung hyperinflation. Pain in chronic diseases may appear to result from abnormalities in pain processing and alteration of sensitization due to the damage and/or inflammation of peripheral structures.
