A persistent cough that produces white or pink-tinged mucus, may indicate heart failure as its underlying cause. The buildup of fluid in lung tissue known as pulmonary congestion, creates airway irritation which results in this condition. Wheezing together with a rattling sound during breathing, occurs frequently in patients. This coughing symptom differs from typical cold-related coughs, because it worsens when you rest, and does not respond to standard treatment methods. A doctor needs to evaluate you when you experience a chronic cough that differs from your previous symptoms.
