Common Causes of Cough

Some of the frequently seen reasons for Cough include

  • Smoking (smoke destroys the cells in the lining of the breathing tubes so that mucus cannot be expelled normally. This leads to chronic cough.)
  • Common cold, influenza, and other viral infections (with yellow or white mucus) are the most common causes.
  • Drugs– (such as ACE inhibitors) cause persistent, dry, nonproductive coughs.
  • Stress– If the cough disappears during sleep, then stress may be the cause.
  • Allergies, Asthma
  • Aspiration (foreign object aspiration or ingestion)
  • Bacterial infection (bronchiectasis, bronchitis, pneumonia, sinusitis, or tracheitis). This is usually accompanied by rusty or green mucus.
  • Viral infection (bronchiolitis, croup, pneumonia, upper respiratory infection)
  • Congestive heart failure
  • Environmental pollution
  • Gastroesophageal reflux
  • Postnasal drip
  • Lung cancer
  • Emphysema

When to Consult a Doctor?

  • There is a cough producing blood in any form.
  • There is shortness of breath or difficulty breathing.
  • Coughing is accompanied by other symptoms such as fever.
  • The cough is producing thick, foul-smelling, rusty, or greenish mucus.
  • There is a cough lasting for more than 10 days.