Sputum: Definition, colors, causes, and when to see a doctor

Sputum is a type of thick mucus produced by the lungs. This article explains the types of sputum, what causes changes, and when to speak with a doctor.

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Coughing Up White Mucus: Causes and Treatments

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When Coughing Up Blood and Blood in Mucus Is an Emergency

Blood in phlegm: Causes, diagnosis, and when to see a doctor

What Color Is Your Phlegm (Mucus)?

Bronchiolitis vs. Bronchitis: Symptoms, Causes, and Treatments

Sputum: Definition, Colors, Causes, and Conditions (2024)

Sputum: Contents, Function, Conditions, Colors