Sputum Expectoration — Which Doctor Should I See?

Sputum expectoration is coughing up and spitting out mucus or phlegm from the lungs and airways. It's a natural reflex to clear the respiratory tract of secretions.

Seek medical attention if sputum is bloody, persists for more than 3 weeks, is accompanied by fever, chest pain, or difficulty breathing, or changes color dramatically.

Common causes include respiratory infections, bronchitis, pneumonia, asthma, COPD, allergies, and smoking. Consult a doctor to determine the underlying cause.