Symptoms of COPD
Symptoms sometimes creep up on people. Without realizing it, people may cut back or stop doing some activities to prevent problems with breathlessness. Oxygen levels in the blood may fall, and carbon dioxide levels may rise, which can cause tiredness, poor concentration, and heart strain. The strained heart may enlarge and lead to swelling of the ankles and legs, called edema. People with COPD are also at risk for heart disease. COPD and heart disease often go together, because long-term cigarette smoking is one of the biggest risks for both diseases.
